!! History Commons Alert, Exciting News

Follow Us!

We are planning some big changes! Please follow us to stay updated and be part of our community.

Twitter Facebook

Complete 911 Timeline

World Trade Center

Project: Complete 911 Timeline
Open-Content project managed by matt, Paul, KJF, mtuck, paxvector

add event | references

According to later reports, the alarm system in WTC 7 is placed on “TEST” status for a period due to last eight hours. This ordinarily happens during maintenance or other testing, and any alarms received from the building are generally ignored. [National Institute of Standards and Technology, 6/2004, pp. 28 pdf file]

Entity Tags: World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center

Jackie Chan.Jackie Chan. [Source: Reuters]A scene for a Hollywood movie about a terrorist plot to blow up the World Trade Center was originally scheduled to be filmed at the top of one of the Twin Towers at this time, but the filming has been canceled because the script for the scene is late to arrive. [ABC News, 9/19/2001; Empire, 9/19/2001; Orlando Sentinel, 9/27/2002] The action-comedy movie, titled Nosebleed, which was written in 1999 (see February 1999-September 11, 2001), is set to feature the well-known martial artist and actor Jackie Chan as a window washer at the WTC who uncovers a terrorist plot to bomb the Twin Towers. [Variety, 2/7/1999; Entertainment Weekly, 9/24/2001]
Actor 'Would Probably Have Died' if Filming Took Place - Chan will later tell the Hong Kong newspaper Oriental Daily News, “Filming was scheduled to have taken place at 7:00 a.m. [on September 11] and… I had to be at the top of one of the towers for one of the scenes.” [ABC News, 9/19/2001; Empire, 9/19/2001] The scene, Chan will say, was going to be filmed at the “Top of the World restaurant.” [Orlando Sentinel, 9/27/2002] Presumably he is referring to Windows on the World, the restaurant at the top of the North Tower. Everyone who is in Windows on the World when Flight 11 hits the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001) will subsequently die. [NPR, 9/11/2003] Chan will comment, “I would probably have died if the shooting had gone ahead as planned.” Today’s filming at the WTC has been canceled, reportedly because the script for the scene that would have been filmed is late. [ABC News, 9/19/2001; Empire, 9/19/2001] “The action was good, but, somehow, the script not ready,” Chan will say.
Actor Is in Canada for Another Film - Instead of doing the scene for Nosebleed, Chan is in Toronto, Canada, where filming began the previous day for another movie he is starring in. That movie, The Tuxedo, is an action-comedy that Steven Spielberg is involved in producing. Chan will say of The Tuxedo, “I only did this movie because Steven Spielberg asked me himself.” [Reuters, 6/17/2001; Canoe, 7/11/2001; Orlando Sentinel, 9/27/2002] He will recall learning of the attacks in New York during filming, saying: “After the first shot, I turned around and everyone was looking at one monitor, and nobody had responded to me. They said, ‘Jackie, a plane crashed into the World Trade Center.’ Then we [saw] the second plane crash. We knew it was a terrorist attack and everyone started crying.” Chan will add, “The whole day I was like a walking dead man.” [Columbia Chronicle, 9/23/2002]
Actor Learned 'Secrets' of the WTC in Preparation for Film - Chan has done a lot of groundwork for Nosebleed. “We had visited the [WTC] before September 11,” he will recall. “The producer. My manager. We had dinner upstairs. We were getting all kinds of information. I was going to play a window washer, so they were telling me things like how many windows the building had.” Chan has therefore learned “the ‘secrets’ of the towers—how air pressure was regulated with doors that might be useful as gags in one of his trademark fights—which sides of the buildings one could work on to avoid the wind,” according to the Orlando Sentinel. [Orlando Sentinel, 9/27/2002; Rocky Mountain News, 9/28/2002] Production of Nosebleed will be canceled as a result of the 9/11 attacks. [PBS, 10/24/2001; Village Voice, 12/4/2001]

Entity Tags: Jackie Chan

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

An “emergency drill” has been scheduled for today, to take place on the 97th floor of the WTC South Tower. [New York Times, 3/31/2006; New York Times, 4/1/2006] A team of technology consultants from California is visiting investment firm Fiduciary Trust for this drill. (Fiduciary Trust has offices on the 97th floor.) [USA Today, 9/13/2001; Dwyer and Flynn, 2005, pp. 77; New York Times, 3/30/2006] No further details are reported as to what it entails, or who the technology consultants are. However, California-based software company Oracle Corp. will later report that six of its consultants were working on the 97th floor of the South Tower on 9/11 and are subsequently missing. So presumably these were the workers involved with the drill. [InfoWorld, 9/13/2001; Associated Press, 9/14/2001]

Entity Tags: Fiduciary Trust, Oracle Corp

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center, Training Exercises

WTC leaseholder Larry Silverstein is supposed to be working today in the temporary offices of his company, Silverstein Properties, on the 88th floor of the North Tower. However, at his Park Avenue apartment, Silverstein’s wife reportedly “laid down the law: The developer could not cancel an appointment with his dermatologist, even to meet with tenants at his most important property.” [New York Observer, 3/17/2003; New York Magazine, 4/18/2005] He is therefore not at the WTC when it is hit, and first hears of the attacks when an associate calls him from the lobby of one of the WTC buildings. [Real Deal, 1/2004] Two of Silverstein’s children—his son, Roger, and daughter, Lisa—work for his company and have been regularly attending meetings with WTC tenants at Windows on the World (the restaurant at the top of the North Tower). Yet this morning they are running late. According to the New York Observer, “If the attack had happened just a little later, Mr. Silverstein’s children would likely have been trapped at Windows.” [New York Observer, 3/17/2003] Fifty-four of Silverstein Properties’ 160 staff are in the North Tower when it is hit, and four of them die. [Globe and Mail, 9/7/2002] Silverstein signed the lease on the WTC less than two months previously, and later will attempt to get $7 billion in insurance for the destruction of the towers (see July 24, 2001).

Entity Tags: Larry Silverstein

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Soldier firing a Stinger missile.Soldier firing a Stinger missile. [Source: US Army]In New York, the Secret Service has a Stinger missile secretly stored in the World Trade Center, to be used to protect the president if the city were attacked when he visits it. Presumably it keeps this is in WTC Building 7, where its field office is. [Tech TV, 7/23/2002; Weiss, 2003, pp. 379] Stinger missiles provide short-range air defense against low-altitude airborne targets, such as fix-winged aircraft, helicopters, and cruise missiles. They have a range of between one and eight kilometers. [Federation of American Scientists, 8/9/2000; GlobalSecurity (.org), 4/27/2005] Whether the Secret Service makes any attempt at defending New York from the two attacking planes with its Stinger missile is unknown. The agency is also known to have air surveillance capabilities. These include a system called Tigerwall, which provides “early warning of airborne threats” and “a geographic display of aircraft activity” (see (September 2000 and after)). And according to Barbara Riggs, who is in the Secret Service’s Washington, DC headquarters on this day, the agency is “able to receive real time information about other hijacked aircraft,” through “monitoring radar and activating an open line with the FAA.” [US Department of the Navy, 9/2000, pp. 28 pdf file; PCCW Newsletter, 3/2006; Star-Gazette (Elmira), 6/5/2006] These capabilities would presumably be of use if the Secret Service wanted to defend the World Trade Center. Furthermore, according to the British defense publication Jane’s Land-Based Air Defence, “the American president’s residences in Washington and elsewhere are protected by specialist Stinger teams in case of an aerial attack by terrorist organizations.” [Jane's Land-Based Air Defence, 10/13/2000] Knight Ridder has previously reported “several sources” telling it, “Stinger missiles are in the Secret Service’s arsenal.” [Knight Ridder, 9/12/1994] And according to the London Telegraph, the Secret Service is “believed to have a battery of ground-to-air Stinger missiles” ready to defend the White House. [Daily Telegraph, 9/16/2001] Flight 77 reportedly comes within four miles of the White House before turning toward the Pentagon. [ABC News, 10/24/2001; USA Today, 8/13/2002] Whether the Secret Service makes any attempt at defending the place with its Stinger missiles is unknown. However, the Washington Post will later claim it is an “urban legend that Stinger missiles are mounted on the White House roof.” [Washington Post, 4/4/2002]

Entity Tags: US Secret Service

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, Flight AA 11, Flight UA 175, Flight AA 77, World Trade Center

The hole caused by the Flight 11 crash.The hole caused by the Flight 11 crash. [Source: Reuters]Flight 11 slams into the WTC North Tower (Building 1). Hijackers Mohamed Atta Waleed Alshehri, Wail Alshehri, Abdulaziz Alomari, and Satam Al Suqami presumably are killed instantly, and many more in the tower will die over the next few hours. Seismic records pinpoint the crash at 26 seconds after 8:46 a.m. [CNN, 9/12/2001; New York Times, 9/12/2001; North American Aerospace Defense Command, 9/18/2001; USA Today, 12/20/2001; Federal Emergency Management Agency, 5/1/2002, pp. 1-10; New York Times, 5/26/2002; USA Today, 8/13/2002; Associated Press, 8/21/2002; Newsday, 9/10/2002] The NIST report states the crash time to be 8:46:30. [National Institute of Standards and Technology, 9/2005, pp. 19] The 9/11 Commission Report states the crash time to be 8:46:40. [9/11 Commission, 7/24/2004, pp. 7] Investigators believe the plane still has about 10,000 gallons of fuel (see 8:57 a.m. September 11, 2001). [New York Times, 5/26/2002] The plane strikes the 93rd through 99th floors in the 110-story building. No one above the crash line survives; approximately 1,360 people die. Below the crash line, approximately 72 die and more than 4,000 survive. Both towers are slightly less than half full at the time of the attack, with between 5,000 to 7,000 people in each tower. This number is lower than expected. Many office workers have not yet shown up to work, and tourists to the observation deck opening at 9:30 A.M. have yet to arrive. [USA Today, 12/20/2001; National Institute of Standards and Technology, 9/2005, pp. 20-22] The impact severs some columns on the north side of the North Tower. Each tower is designed as a “tube-in-tube” structure and the steel columns which support its weight are arranged around the perimeter and in the core. The plane, which weighs 283,600 lb and is traveling at an estimated speed of around 430 mph (see October 2002-October 2005), severs 35 of the building’s 236 perimeter columns and damages another two. The damage to the South Tower’s perimeter will be similar (see 9:03 a.m. September 11, 2001). [National Institute of Standards and Technology, 9/2005, pp. 5-9, 20, 22] The perimeter columns bear about half of the tower’s weight, so this damage reduces its ability to bear gravity loads by about 7.5 percent. [National Institute of Standards and Technology, 9/2005, pp. 6] The actual damage to the 47 core columns is not known, as there are no photographs or videos of it, but there will be much speculation about this after 9/11. It will be suggested that some parts of the aircraft may have damaged the core even after crashing through the exterior wall. According to the National Institute of Standards and Technology (NIST): “Moving at 500 mph, an engine broke any exterior column it hit. If the engine missed the floor slab, the majority of the engine core remained intact and had enough residual momentum to sever a core column upon direct impact.” [National Institute of Standards and Technology, 9/2005, pp. 107] According to NIST’s base case computer model, three of the core columns are severed and another ten suffer some damage. [National Institute of Standards & Technology, 9/2005, pp. 189 pdf file] If this is accurate, it means that the impact damage to the core reduces the Tower’s strength by another approximately 7.5 percent, meaning that the building loses about 15 percent of its strength in total. This damage will be cited after 9/11 by NIST and others researchers as an event contributing to the building’s collapse (see October 23, 2002 and October 19, 2004). In addition, some of the fireproofing on the steel columns and trusses may be dislodged. The original fireproofing on the fire floors was mostly Blazeshield DC/F, but some of the fireproofing on the flooring has recently been upgraded to Blazeshield II, which is about 20 percent denser and 20 percent more adhesive. [National Institute of Standards & Technology, 9/2005, pp. xxxvi, 83 pdf file] Photographs and videos of the towers will not show the state of fireproofing inside the buildings, but NIST will estimate the damage to it using a computer model. Its severe case model (see (October 2002-October 2005)) will predict that 43 of the 47 core columns are stripped of their fireproofing on one or more floors and that fireproofing is stripped from trusses covering 60,000 ft2 of floor area, the equivalent of about one and a half floors. NIST will say that the loss of fireproofing is a major cause of the collapse (see April 5, 2005), but only performs 15 tests on fireproofing samples (see October 26, 2005). [National Institute of Standards and Technology, 9/2005, pp. 23] According to NIST, more fireproofing is stripped from the South Tower (see 9:03 a.m. September 11, 2001).

Entity Tags: Mohamed Atta, National Institute of Standards and Technology, Satam Al Suqami, Waleed Alshehri, Abdulaziz Alomari, World Trade Center, Wail Alshehri

Timeline Tags: 9/11 Timeline

Category Tags: Key Day of 9/11 Events, All Day of 9/11 Events, Flight AA 11, Flight UA 175, George Bush, World Trade Center, Mohamed Atta, Other 9/11 Hijackers, WTC Investigation

William RodriguezWilliam Rodriguez [Source: Publicity photo]According to a WTC janitor, there is an explosion in the basement of the North Tower just before the plane hits up above. William Rodriguez has worked at the World Trade Center for 20 years, including the time of the 1993 bombing, and is responsible for cleaning three stairwells in the North Tower. He is talking to his supervisor in an office in the B-1 level in the basement when, he says, “I heard this massive explosion below, on level B-2 or 3.” He says, “The floor vibrated. We were all thrown upwards, then everyone in the office started screaming.” Then, “seconds later, there was another explosion way above, which made the building sway from side to side. And this, we later discovered, was the first plane hitting the North Tower on the 90th floor.” A man then runs into the office, shouting, “Explosion! Explosion!” The man, Felipe David, had been standing in front of a nearby lift when a fireball had burst from the lift shaft, severely burning him. Rodriguez will later question, “Now you tell me how an explosion from a jet liner could have burnt a man 90 floors down within seconds of impact?” The National Institute of Standards and Technology (NIST) will suggest that the basement explosion Rodriguez heard might have been caused by a fireball traveling from the aircraft down the central lift shaft. However, some time after hearing it, Rodriguez rescues two people trapped in a lift. He will therefore doubt NIST’s claim, saying that if it were true, “Why were the two people [I] rescued from the lift not burnt to death?” [New York Magazine, 3/20/2006; Western Morning News, 12/2/2006; Herald (Glasgow), 2/16/2007; Argus (Brighton), 2/26/2007] Rodriguez also claims to have witnessed alleged hijacker Mohand Alshehri in the World Trade Center in June 2001 (see June 2001).

Entity Tags: William Rodriguez, World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Flight 11 hits the WTC North Tower at 8:46. This video still is the only well-known image of this crash (from the French documentary).Flight 11 hits the WTC North Tower at 8:46. This video still is the only well-known image of this crash (from the French documentary). [Source: Gamma Press]Two French documentary filmmakers are filming a documentary on New York City firefighters about ten blocks from the WTC. One of them hears a roar, looks up, and captures a distant image of the first WTC crash. They continue shooting footage nonstop for many hours, and their footage is first shown that evening on CNN. [New York Times, 1/12/2002] President Bush later claims that he sees the first attack live on television, but this is technically impossible, as there was no live news footage of the attack. [Wall Street Journal, 3/22/2004 pdf file]

Entity Tags: George W. Bush

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, Flight AA 11, George Bush, World Trade Center

Lloyd Thompson.Lloyd Thompson. [Source: Port Authority of New York and New Jersey]Lloyd Thompson, the deputy fire safety director in the North Tower of the World Trade Center, attempts to make an announcement instructing workers to evacuate the building, but the public address system was damaged by Flight 11 hitting the tower and so no one hears it. Thompson works for OCS Security, which holds the security contract for the WTC, and is on duty at the fire command desk in the ground-floor lobby of the North Tower. There, he is responsible for watching the building’s various security and fire safety computer systems. [9/11 Commission, 5/18/2004 pdf file; New York Times, 5/22/2004; Dwyer and Flynn, 2005, pp. 45]
Announcements Attempted, but Public Address System Is Damaged - After Flight 11 hits the North Tower (see 8:46 a.m. September 11, 2001), following protocol, Thompson initially tries issuing instructions to just the floors of the building that have generated “computerized alarms,” according to the 9/11 Commission Report. In an announcement, he advises workers on those floors “to descend to points of safety—at least two floors below the smoke or fire—and to wait there for further instructions.” He then tries ordering the full evacuation of the tower over the public address system. [9/11 Commission, 7/24/2004, pp. 286] However, Thompson’s attempts at issuing instructions to people in the building are unsuccessful. The 9/11 Commission will state, “[T]he public address system was damaged [by the impact of the plane] and no one apparently heard the announcement.” [9/11 Commission, 5/18/2004 pdf file]
Time of Attempted Evacuation Order Unclear - It is unclear when Thompson first tries ordering the full evacuation of the North Tower. He will tell the 9/11 Commission that he does so “within about 10 minutes” of Flight 11 hitting the building, meaning before 8:56 a.m. The reason for the delay, according to the 9/11 Commission Report, is that, although he was “immediately aware that a major incident had occurred” after Flight 11 hit the tower, Thompson “did not know for approximately 10 minutes that a commercial jet had directly hit the building.” However, when he is contacted by the deputy fire safety director in the South Tower at 8:49 a.m., just three minutes after the crash, Thompson tells his colleague that there has been “a major explosion” at the WTC, which, he says, “might be an aircraft” (see 8:49 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 286-287; Dwyer and Flynn, 2005, pp. 27] Furthermore, George Tabeek, the Port Authority’s security manager for the WTC, will later say that “he called in to his fire safety command”—presumably referring to the fire command desks in the Twin Towers—“right after the first plane struck” and gave instructions “to evacuate the North Tower” (see Shortly After 8:46 a.m. September 11, 2001). [New Jersey Star-Ledger, 9/6/2011] Additionally, according to the 9/11 Commission Report, when fire department chiefs arrive in the lobby of the North Tower, Michael Hurley, the Port Authority’s fire safety director, tells them “that the full building evacuation announcement had been made within one minute of the building being hit.”
Automated Announcement Tells Workers to Stay in Offices - Around the time that Thompson is attempting to instruct people to evacuate the North Tower, the deputy fire safety director in the South Tower makes an announcement over that building’s public address system, advising workers to stay in—or return to—their offices, rather than evacuate (see (8:50 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 286-288] According to some security officers, an automated announcement was activated when Flight 11 crashed, which similarly instructs workers in the North Tower to stay in their offices, although it is unclear how many people hear that announcement (see Shortly After 8:46 a.m. September 11, 2001). [Newsday, 9/10/2002]

Entity Tags: Lloyd Thompson

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

During the 9/11 catastrophe, around 200 people die in the WTC’s elevators without getting help from elevator mechanics, according to an in-depth study later performed by USA Today. Some of the victims are burned by the initial explosion, some die as the elevator cars plummet when their cables are severed, and some are stuck and perish in the collapse. USA Today will say it “could not locate any professional rescues of people stuck in elevators. The Fire Department of New York and the Port Authority also could not cite successful rescues.” After the North Tower is hit, most of the WTC’s 83 elevator mechanics gather in the lobby of the South Tower, but when the second plane hits, they evacuate. In contrast, a passing elevator mechanic from another company runs into the WTC and dies trying to free trapped passengers. USA Today will comment: “When the World Trade Center was bombed in 1993, Otis Elevator’s mechanics led the rescue of 500 people trapped in elevators. Some mechanics were dropped onto the roofs of the Twin Towers by helicopter. Others, carrying 50-pound oxygen tanks on their backs, climbed through smoke to machine rooms high in the towers. On Sept. 11, the elevator mechanics—many of the same men involved in the rescues in 1993—left the buildings after the second jet struck, nearly an hour before the first building collapsed.” Although ACE Elevator, the local company which won the WTC contract from Otis in 1994, will say it was acting in accordance with procedure, USA Today will note: “The departure of elevator mechanics from a disaster site is unusual. The industry takes pride in rescues. In the Oklahoma City bombing in 1995, elevator mechanics worked closely with the firefighters making rescues.” Robert Caporale, editor of Elevator World will say, “Nobody knows the insides of a high-rise like an elevator mechanic. They act as guides for firefighters, in addition to working on elevators.” The Port Authority will also say that their departure was in conflict with the emergency plan. “There was no situation in which the mechanics were advised or instructed to leave on their own.” [USA Today, 12/19/2001; USA Today, 9/4/2002]

Entity Tags: World Trade Center, ACE Elevator, Port Authority of New York and New Jersey, Robert Caporale

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Mike Pecoraro.Mike Pecoraro. [Source: Chief Engineer]Mike Pecoraro, an engineer who is part of the crew that services the WTC complex, is at work in the mechanical shop in the second subbasement of the north WTC tower when it is hit. When the room he is in starts filling with white smoke and he can smell kerosene (jet fuel), he heads up stairs with a co-worker towards a small machine shop on the C level. Yet, he says, “There was nothing there but rubble. We’re talking about a 50 ton hydraulic press—gone!” He then heads for the parking garage, yet finds that “there were no walls, there was rubble on the floor, and you can’t see anything.” He ascends to the B level where he sees a 300-pound steel and concrete fire door, which is lying on the floor, wrinkled up “like a piece of aluminum foil.” Pecoraro recalls seeing similar things at the Center when it was bombed in 1993 and is therefore convinced that a bomb has gone off this time. When he makes it into the main lobby, he sees massive damage: “The whole lobby was soot and black, elevator doors were missing. The marble was missing off some of the walls. 20-foot section of marble, 20 by 10 foot sections of marble, gone from the walls.… Broken glass everywhere, the revolving doors were all broken and their glass was gone.” Pecoraro says he only later hears that “jet fuel actually came down the elevator shaft, blew off all the (elevator) doors and flames rolled through the lobby. That explained all the burnt people and why everything was sooted in the lobby.” He makes it out of the North Tower before it collapses. [Chief Engineer, 8/1/2002]

Entity Tags: Mike Pecoraro, World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

An automated announcement is reportedly activated in the North Tower of the World Trade Center, advising workers to stay in their offices rather than evacuate, although a senior official will later dispute the accounts of security officers who describe hearing it. The announcement is heard by workers in the Port Authority’s Security Command Center (SCC) on the 22nd floor of the North Tower.
Automated Announcement Heard by 'a Lot of People' - The recorded female voice that makes the announcement usually comes on automatically in situations such as when a sprinkler is loose, telling people to return to their offices, according to Hermina Jones, a security guard in the SCC. Jones will recall that the automated recording now comes on, apparently after being activated by the impact of Flight 11 hitting the North Tower. She will say that “a lot of people listened to that and went back to their offices. When tenants called me on the intercom, I told them to ignore it and take Stairway A.” Jones will add, “You could hear [the recording] in the background, telling them over and over, ‘Please go back in your office.’” Nancy Joyner, a security supervisor, also notices the recorded announcement. “Whenever there is smoke, sometimes the alarm will trigger, and that’s when you heard [the recording],” she will say. She will add, “That day [i.e. September 11], the recording came on.”
Port Authority Official Says There Are 'No Automated Announcements' - However, Alan Reiss, the director of the World Trade Department of the Port Authority, will dispute the recollections of Jones and Joyner, and claim that no recording goes off. He will state, “There were no automated announcements used anywhere in the World Trade Center, as such recordings are not permitted by fire codes.” Furthermore, Reiss will state, “no messages of any kind—live or otherwise—could be heard over [the North Tower’s] public address system, which was severed by the impact of the first plane.” [Newsday, 9/10/2002; Newsday, 10/8/2002] The 9/11 Commission Report will indicate, however, that announcements might be heard in a few areas of the North Tower. “Because of damage to building systems caused by the impact of the plane,” the report will state, “public address announcements were not heard in many locations.” Around the time that the automated announcement is reportedly going off in the North Tower, an announcement is made in the South Tower, advising workers to stay in their offices, instead of evacuating (see (8:50 a.m.) September 11, 2001). That announcement, though, is made by a deputy fire safety director, rather than being a recorded message. [9/11 Commission, 7/24/2004, pp. 286-288]

Entity Tags: Nancy Joyner, Alan Reiss, Port Authority of New York and New Jersey, Hermina Jones, World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Security officials in the South Tower of the World Trade Center instruct people who are evacuating the building to return to their offices. [Observer, 9/16/2001; 9/11 Commission, 7/24/2004, pp. 289] After Flight 11 crashed into the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001), many people in the South Tower, who were unclear about what had happened, decided to leave their building. [9/11 Commission, 7/24/2004, pp. 287] But on their way down, some of them encounter officials who are telling people to head back upstairs.
Official with Megaphone Says People Can Return to Their Floors - Arturo Domingo, who works for Morgan Stanley on the 60th floor of the South Tower, is among those trying to leave. When he reaches the 44th floor, he finds a man there with a megaphone who is telling people: “Our building is secure. You can go back to your floor. If you’re a little winded, you can get a drink of water or coffee in the cafeteria.” Domingo and some of his colleagues return to their office, but head down again after Flight 175 hits their building at 9:03 a.m. (see 9:03 a.m. September 11, 2001). [New York Times, 9/13/2001]
Workers Told They Are Safest inside Tower - John Howard, also a Morgan Stanley employee, similarly encounters a man with a megaphone—perhaps the same person—as he is evacuating. The man is saying, “Don’t panic!” and telling people they are safer staying in the building than leaving it. But there is then a “huge explosion,” presumably the sound of Flight 175 hitting the tower. At that moment, Howard will later recall, “We all ran over the guy with the bullhorn to get out.” [Newsday, 9/12/2001] And another Morgan Stanley employee makes it to the staircase and has gone down more than 20 floors when she hears a voice on a megaphone instructing people to head back upstairs. [Observer, 9/16/2001]
Workers Sent Back from Ground Floor - On the 78th floor of the tower, people waiting for express elevators to take them down to the lower floors are told by security officials to return to their offices. And a group of 20 workers who have descended to the ground-floor lobby is told by security officials to go back upstairs. Nineteen of them do so, and 18 of these will subsequently die in the tower. [9/11 Commission, 7/24/2004, pp. 289, 544] The Observer will comment that the instructions for workers to return to their offices, rather than evacuate, mean that “during the crucial 15 minutes of what should have been escape”—after the attack on the North Tower but before the attack on the South Tower—“there was confusion and a two-way rush along the panic-stricken arteries of life.” [Observer, 9/16/2001]
Security Officials Work for Port Authority - The security officials advising workers to return upstairs are “not part of the fire safety staff,” according to the 9/11 Commission Report. [9/11 Commission, 7/24/2004, pp. 289] According to The Observer, they are “officials of the Port Authority.” [Observer, 9/16/2001] Following the attack on the North Tower, an announcement goes out over the public address system in the South Tower that similarly tells workers their building is safe and they should stay in, or return to, their offices, rather than evacuate (see (8:50 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 287-288; Dwyer and Flynn, 2005, pp. 72] That announcement is made on the orders of George Tabeek, the Port Authority’s security manager for the WTC (see Shortly After 8:46 a.m. September 11, 2001). [New Jersey Star-Ledger, 9/6/2011; ABC News, 9/10/2011] It is unclear if the security officials who instruct workers to return upstairs in person are acting on orders from Tabeek, or if someone else has told them what to do.

Entity Tags: Port Authority of New York and New Jersey, John Howard (Morgan Stanley employee), Arturo Domingo

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

George Tabeek, a security manager with the Port Authority of New York and New Jersey, decides to have an announcement made in the South Tower of the World Trade Center, instructing workers to stay in, or return to, their offices, instead of evacuating. [New Jersey Star-Ledger, 9/6/2011; ABC News, 9/10/2011] After Flight 11 hits the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001), many people in the South Tower, who are unclear about what has happened, decide to leave their building. [9/11 Commission, 7/24/2004, pp. 287]
Security Manager Passes on Decision to Fire Command Desk - However, around the same time, Tabeek, the Port Authority’s security manager for the WTC, decides not to evacuate the South Tower and to issue instructions advising workers to go back to their offices. [ABC News, 9/10/2011] Tabeek will later recall that he contacts his “fire safety command” and tells the person he talks with “to evacuate the North Tower, but keep people inside the South Tower.” [New Jersey Star-Ledger, 9/6/2011] Presumably Tabeek means that he contacts the fire command desk in the lobby of the South Tower, which is currently manned by Philip Hayes, a deputy fire safety director. A button at the desk allows fire safety directors to deliver announcements over the tower’s public address system. [Dwyer and Flynn, 2005, pp. 26]
Security Manager's Instruction Leads to Announcement - Shortly after Tabeek gives his instruction to the fire command desk, an announcement, later believed to have been made by Hayes, will go out over the public address system, telling workers in the South Tower that their building is safe and advising them to stay in, or return to, their offices (see (8:50 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 287-288; Dwyer and Flynn, 2005, pp. 72] That announcement “may have led to the deaths of hundreds of people,” USA Today will suggest. [USA Today, 9/2/2002] Some security officials in the South Tower will instruct workers, in person, to return upstairs, rather than evacuate (see (8:47 a.m.-9:02 a.m.) September 11, 2001). It is unclear if those officials are, like Hayes, acting on instructions issued by Tabeek. [Observer, 9/16/2001; 9/11 Commission, 7/24/2004, pp. 289]
Instruction Is Inconsistent with Protocol - Tabeek’s instruction reportedly goes against protocol. The 9/11 Commission Report will state: “When a notable event occurred [at the WTC], it was standard procedure for the on-duty deputy fire safety director to make an ‘advisory’ announcement to tenants who were affected by or might be aware of the incident, in order to acknowledge the incident and to direct tenants to stand by for further instructions. The purpose of advisory announcements, as opposed to ‘emergency’ announcements (such as to evacuate), was to reduce panic.” Therefore, according to the 9/11 Commission Report, “A statement from the deputy fire safety director informing tenants that the incident had occurred in the other building” would be “consistent with protocol.” However, “the expanded advice” that Tabeek asks to be given—for workers to stay in, or return to, their offices—“did not correspond to any existing written protocol.” [9/11 Commission, 7/24/2004, pp. 288, 544]
Security Manager Thinks Evacuation Would Put Workers in Danger - Tabeek will explain why he decided to instruct workers to stay in the South Tower, telling ABC News he was “worried about the debris raining down from the crippled North Tower onto the plaza below,” and he was therefore “afraid that if he evacuated people who he thought were safe in the South Tower… they’d be in grave danger from the falling debris.” He will tell the New Jersey Star-Ledger, “If these people’s lives in [the South Tower] are not in danger, if I put them outside, their life is in danger.” Tabeek will also explain his decision by saying, “We never took into consideration a dual attack.” In response to criticism of his decision, he will say, “I can’t go back on the orders I gave, because at the time it was the right thing to do.” [New Jersey Star-Ledger, 9/6/2011; ABC News, 9/10/2011]

Entity Tags: George Tabeek, Philip T. Hayes

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

John OdermattJohn Odermatt [Source: Queens Gazette]New York City’s Office of Emergency Management (OEM) is responsible for coordinating the city’s response to major incidents, including terrorist attacks. [9/11 Commission, 7/24/2004, pp. 283-284] Its offices are in Building 7 of the World Trade Center. Today is reportedly “going to be a busy day at the OEM,” as staff members have come to work early to prepare for Tripod, a major biological-terrorism training exercise scheduled for September 12 (see September 12, 2001). Their building shakes when the North Tower is hit at 8:46 a.m. OEM Commissioner John Odermatt initially believes a freak accident has occurred involving a ground-to-air missile, but soon after, OEM is informed that a plane hit the North Tower. Immediately, OEM staff members begin to activate their emergency command center, located on the 23rd floor of WTC 7 (see June 8, 1999). [Jenkins and Edwards-Winslow, 9/2003, pp. 15] They call agencies such as the New York fire and police departments, and the Department of Health, and direct them to send their designated representatives to the OEM. They also call the Federal Emergency Management Agency (FEMA) and request at least five federal Urban Search and Rescue Teams. [9/11 Commission, 7/24/2004, pp. 293] According to the 9/11 Commission, OEM’s command center will be evacuated at 9:30 a.m. due to reports of further unaccounted for planes (see (9:30 a.m.) September 11, 2001). By that time, none of the outside agency liaisons will have arrived. [9/11 Commission, 7/24/2004, pp. 305] Other accounts indicate the command center may be evacuated earlier, possibly even before the second tower is hit (see (Soon After 8:46 a.m.-9:35 a.m.) September 11, 2001 and (Shortly Before 9:03 a.m.) September 11, 2001).

Entity Tags: Office of Emergency Management, Tripod, John Odermatt

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center, Training Exercises

CNN is the first major network to show the footage of the crash site. It breaks into a commercial and anchor Carol Lin says, “This just in. You are looking at… obviously a very disturbing live shot there—that is the World Trade Center, and we have unconfirmed reports this morning that a plane has crashed into one of the towers of the World Trade Center.” CNN then switches to Sean Murtagh, the network’s vice president of finance, who says in a live telephone interview, “I just witnessed a plane that appeared to be cruising at a slightly lower than normal altitude over New York City. And it appears to have crashed into—I don’t know which tower it is—but it hit directly in the middle of one of the World Trade Center towers. It was a jet, maybe a two-engine jet, maybe a 737… a large passenger commercial jet… It was teetering back and forth, wing-tip to wing-tip, and it looks like it has crashed into—probably, twenty stories from the top of the World Trade Center—maybe the eightieth to eighty-fifth floor. There is smoke billowing out of the World Trade Center.” [CNN, 9/11/2001; Bamford, 2004, pp. 16-17] Many reports do not come until a few minutes later. For instance, ABC first breaks into regular programming with the story at 8:52 a.m. [ABC News, 9/14/2002] Incredibly, a NORAD timeline presented to the 9/11 Commission in 2003 claims that CNN doesn’t begin its coverage of the attacks until 8:57. [9/11 Commission, 5/23/2003]

Entity Tags: Carol Lin, Sean Murtagh, World Trade Center, CNN

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, Flight AA 11, Flight UA 175, World Trade Center

Richard SheirerRichard Sheirer [Source: Publicity photo]Richard Sheirer is in a meeting at New York City Hall when he is informed by telephone of the first plane hitting the World Trade Center. Sheirer is the director of the Mayor’s Office of Emergency Management (OEM), which was set up in 1996 to coordinate the city’s overall response to major incidents, including terrorism (see 1996). It has an emergency command center on the 23rd floor of WTC 7, specially intended for coordinating the response to catastrophes such as terrorist attacks (see June 8, 1999). Yet instead of going to this, Sheirer heads to the North Tower, and arrives at the fire command post set up in its lobby before the second crash at 9:03 a.m. [New York Magazine, 10/15/2001; 9/11 Commission, 5/18/2004 pdf file] John Odermatt, Sheirer’s top deputy, also goes to the North Tower and says that, after the first plane hit, he leaves only two staffers at the command center. John Farmer, who heads the 9/11 Commission unit that assesses the city response to the attacks, will find it “strange that Sheirer, four OEM deputies, and a field responder went straight to the North Tower… rather than to the nearby emergency command center.” Journalists Wayne Barrett and Dan Collins will conclude, “[T]he command center was out of business from the outset.” [Barrett and Collins, 2006, pp. 31 and 34] Sheirer stays at the North Tower lobby until soon after 9:30 a.m., when Mayor Giuliani requests he joins him at the temporary command post at 75 Barclay Street (see (9:50 a.m.-10:10 a.m.) September 11, 2001). [9/11 Commission, 5/18/2004 pdf file] John Farmer will later complain, “We [the 9/11 Commission] tried to get a sense of what Sheirer was really doing. We tried to figure it out from the videos. We couldn’t tell. Everybody from OEM was with him, virtually the whole chain of command. Some of them should have been at the command center.” Fire Captain Kevin Culley, who works as a field responder at OEM, is later asked why most of the OEM’s top brass were with him at the scene of the incident. He says, “I don’t know what they were doing. It was Sheirer’s decision to go there on his own. The command center would normally be the focus of a major event and that would be where I would expect the director to be.” When the 9/11 Commission later investigates OEM’s shortcomings on 9/11, “No rationale for Sheirer’s prolonged lobby stay, no information conveyed to commanders, and no steps to coordinate the response” will be discovered. [Barrett and Collins, 2006, pp. 31-32 and 34]

Entity Tags: Office of Emergency Management, John Odermatt, Kevin Culley, Richard Sheirer

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Philip Hayes.Philip Hayes. [Source: Newsday]Philip Hayes, the deputy fire safety director on duty in the South Tower of the World Trade Center, contacts Lloyd Thompson, his counterpart in the North Tower, and says he will wait to hear from “the boss from the fire department or somebody” before he orders an evacuation of the South Tower. [9/11 Commission, 7/24/2004, pp. 287; Dwyer and Flynn, 2005, pp. 27] Hayes is a retired New York City firefighter who now works for OCS Security, which holds the fire safety contract for the WTC. He is on duty at the fire command desk in the ground-floor lobby of the South Tower. [New York Times, 10/25/2001; USA Today, 9/2/2002; Dwyer and Flynn, 2005, pp. 26]
Hayes Told about 'Major Explosion' at the WTC - Hayes, who currently has no information about what has happened or guidance that he can provide to tenants of the South Tower, phones Thompson, the deputy fire safety director at the fire command desk in the North Tower. After Hayes introduces himself, Thompson tells him: “We got, uh, a major explosion over at the Trade Center here. It might be an aircraft.” Hayes then says: “We just wanted to get some direction on evacuation. But I’m not going to do anything until we hear [from] the boss from the fire department or somebody… because we don’t know what it is yet.” Thompson responds, “Okay,” and the call then ends. [Port Authority of New York and New Jersey, 9/11/2001 pdf file; Dwyer and Flynn, 2005, pp. 27]
Public Announcement Made after Call - Hayes’s intention, of waiting for instructions before taking any action, is “[c]onsistent with protocol,” according to the 9/11 Commission Report. However, shortly after Hayes calls Thompson, an announcement, later believed to have been made by Hayes, will go out over the public address system in the South Tower, telling workers that their building is safe and instructing them to stay in, or return to, their offices (see (8:50 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 287-288; Dwyer and Flynn, 2005, pp. 72] That announcement is made on the orders of George Tabeek, the New York Port Authority’s security manager for the WTC (see Shortly After 8:46 a.m. September 11, 2001). [New Jersey Star-Ledger, 9/6/2011; ABC News, 9/10/2011]
Deputy Fire Safety Directors Have Numerous Responsibilities - The deputy fire safety directors who work in the main lobby of each of the Twin Towers have responsibilities that include eliminating potential fire safety hazards, being available to address any concerns tenants might have relating to fire safety, and assisting with crowd control and evacuation, if required. [Port Authority of New York and New Jersey, 1999, pp. 8 pdf file; Averill et al., 9/2005, pp. 38-39] Equipment on their consoles allows them to monitor elevators and adjust ventilation systems, and they can press a button in order to deliver announcements over the public address system in their buildings. [Dwyer and Flynn, 2005, pp. 26]

Entity Tags: Philip T. Hayes, Lloyd Thompson

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Alan DeVona.Alan DeVona. [Source: Atlas Shrugs]An officer with the Port Authority Police Department (PAPD) calls for the evacuation of the upper floors of the North Tower of the World Trade Center over a PAPD radio channel. Transcripts of PAPD radio transmissions will show that at 8:49 a.m., three minutes after Flight 11 crashed into the North Tower (see 8:46 a.m. September 11, 2001), the PAPD officer talks to the PAPD desk, which is in Building 5 of the WTC, just northeast of the North Tower. He says: “Start doing the evac, the upper levels. Have the units put on the Scott air packs.” The officer at the PAPD desk then radios all PAPD units and tells them to “bring Scott air packs [to] One World Trade,” i.e. the North Tower. [Port Authority of New York and New Jersey, 9/11/2001, pp. 2 pdf file; Port Authority of New York and New Jersey, 11/12/2001, pp. 16 pdf file; National Institute of Standards and Technology, 9/2005, pp. 195]
Patrol Sergeant Recalls Requesting Evacuation - It is unclear which PAPD officer requests the evacuation at this time. According to some accounts, Alan DeVona, the PAPD patrol sergeant at the WTC, makes the request. [Port Authority of New York and New Jersey, 11/12/2001, pp. 16 pdf file; Dwyer and Flynn, 2005, pp. 78] DeVona will later recall that he had just walked out from the PAPD desk in WTC 5 when he heard the explosion as Flight 11 hit the North Tower. Along with his colleague, Anthony Basic, he radioed the PAPD desk and reported that the top floors of the North Tower were on fire, due to a “possible aircraft collision.” He headed into the North Tower to coordinate with emergency agencies as they arrived there. DeVona will recall that he then “radios to have all WTC police units get Scott air packs and begin evacuation of [the North Tower].” He will subsequently be “approached by numerous PAPD units as they entered the lobby” of the North Tower, and he “dispatches them through the concourse to evacuate the complex.” [Devona, 3/28/2002, pp. 24 pdf file]
Police Commander Recalls Requesting Evacuation - However, Captain Anthony Whitaker, the PAPD commanding officer at the WTC, will also say that he calls for the evacuation of the WTC around this time. Whitaker was on duty in the shopping mall beneath the Twin Towers when Flight 11 hit the North Tower. [Dwyer and Flynn, 2005, pp. 78] He heard a “strange roar” and saw a “gigantic fireball” coming out of the lobby of the North Tower. He then contacts the PAPD desk in WTC 5. Whitaker will recall, “I had no idea what had just happened, but I knew it was bad.” Therefore, he will say, “I ordered the cop at the desk to begin a full-scale evacuation of the entire complex.” This will mean the evacuation of “both towers and the adjoining buildings.” Whitaker contacts one of his sergeants and then, he will recall, “we started placing Port Authority cops in strategic locations in the shopping mall to direct the evacuation.” Whitaker will say that after 9/11, he is repeatedly asked, “Why did you give that order to evacuate at that particular time?” following the first crash, but before the second plane hit the WTC. His explanation will be: “It just occurred to me that whatever was going on—and I still didn’t know what that was—was beyond my ability as a commanding officer of that facility to do anything about it. So it seemed to me that the only prudent thing to do was start a full-scale evacuation and get everybody out of there.” [Fink and Mathias, 2002, pp. 23-24; Murphy, 2002, pp. 179-181]
Evacuation Orders Cannot Be Heard by Fire Safety Directors - At 9:00 a.m., Whitaker will call for an evacuation of the entire WTC complex (see 8:59 a.m.-9:02 a.m. September 11, 2001). However, both that instruction and the current one are given over PAPD radio channel W, which cannot be heard by the deputy fire safety directors in the Twin Towers, who are able to make announcements to the buildings’ occupants over the public address systems. [WTC News, 8/1995 pdf file; Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; 9/11 Commission, 7/24/2004, pp. 293; National Institute of Standards and Technology, 9/2005, pp. 195, 201] An announcement advising workers to evacuate will only go out over the public address system in the South Tower at 9:02 a.m. (see 9:02 a.m. September 11, 2001). And attempts to order workers to evacuate the North Tower are unsuccessful because that building’s public address system was damaged by the plane crash (see (Between 8:47 a.m. and 8:55 a.m.) September 11, 2001). [New York Times, 5/18/2004]
PAPD Investigates All Reports of Fires at WTC - The WTC is a Port Authority property, which means it is patrolled by the PAPD—the Port Authority’s independent police agency. Members of the PAPD respond to “thefts, injuries, fires, all species of crisis large and small, almost always more quickly than the city emergency responders could get there,” according to New York Times reporters Jim Dwyer and Kevin Flynn. “By plan,” Dwyer and Flynn will write, “the PAPD checked out every report of fire” and “its officers were trained in at least rudimentary firefighting.” [Dwyer and Flynn, 2005, pp. 78]

Entity Tags: Anthony Basic, Anthony Whitaker, Alan DeVona, Port Authority Police Department

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

An announcement goes out over the public address system in the South Tower of the World Trade Center, telling workers that an incident has occurred in the other WTC tower and their building is safe, and advising them to stay in—or return to—their offices, rather than evacuate. [USA Today, 9/2/2002; 9/11 Commission, 7/24/2004, pp. 287-288] After Flight 11 hit the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001), many people in the South Tower were unaware of what had happened. “Some believed an incident had occurred in their building; others were aware that a major explosion had occurred on the upper floors of the North Tower,” the 9/11 Commission Report will state. As a result, many workers decided to leave the South Tower. [9/11 Commission, 7/24/2004, pp. 287] As they do so, an announcement is made over the public address system.
Announcement Says South Tower Is Secure - Brian Clark, an executive with Euro Brokers who also serves as a fire warden and is on the 84th floor of the South Tower, will later describe this announcement. “First, the strobe lights flashed, as they did during their normal fire drills,” he will say. “The alarm system gave a little bit of a whoop, whoop… to alert you to an announcement about to be made. Then the very familiar voice, the one we heard all the time, came over the system.” Clark will recall that the voice says: “Your attention, please, ladies and gentlemen. Building 2 [i.e. the South Tower] is secure. There is no need to evacuate Building 2. If you are in the midst of evacuation, you may use the re-entry doors and the elevators to return to your office. Repeat, Building 2 is secure.” [PBS, 4/30/2002; Dwyer and Flynn, 2005, pp. 72] The announcement is made two or possibly three times, according to USA Today. [USA Today, 9/2/2002] Florence Engoran, a credit analyst working in the South Tower, will recall it being made “[o]ver and over and over again.” [DiMarco, 2007, pp. 50]
Announcement May Lead to Hundreds of Deaths - Many people in the South Tower remain on their floors after hearing the announcement, while others who were leaving the building turn around and head back upstairs. [9/11 Commission, 7/24/2004, pp. 289] USA Today will suggest that the announcement therefore “may have led to the deaths of hundreds of people.” [USA Today, 9/2/2002] According to the National Institute of Standards and Technology, of those who die in the South Tower, only 11 are below where the plane hits the tower at 9:03 a.m. (see 9:03 a.m. September 11, 2001), and 619 are in or above the point of impact. [National Institute of Standards and Technology, 9/2005, pp. 44]
Announcement Goes against Protocol - The announcement is later believed to have been made by Philip Hayes, a deputy fire safety director at the WTC, who is manning the fire command desk in the lobby of the South Tower. Fire safety directors are trained to read scripted announcements from a loose-leaf binder. But, according to the 9/11 Commission Report, the advice given in the announcement, for people to stay in, or return to, their offices, “did not correspond to any existing written protocol.”
Security Manager Decided to Instruct Workers Not to Evacuate - The 9/11 Commission Report will also state, “We do not know the reason for the announcement, as both [Hayes] and the director of fire safety for the WTC complex perished in the South Tower’s collapse.” [USA Today, 9/2/2002; 9/11 Commission, 7/24/2004, pp. 288; Dwyer and Flynn, 2005, pp. 26, 72] However, George Tabeek, a security manager with the Port Authority of New York and New Jersey, will admit having made the decision to instruct South Tower workers to return to their offices (see Shortly After 8:46 a.m. September 11, 2001). [ABC News, 9/10/2011] Some security officials in the South Tower instruct workers, in person, to return upstairs, rather than evacuate (see (8:47 a.m.-9:02 a.m.) September 11, 2001). But finally, about a minute before Flight 175 hits the South Tower, an instruction will be broadcast over the public address system informing workers that they can begin an evacuation if conditions warrant it (see 9:02 a.m. September 11, 2001). [Observer, 9/16/2001; 9/11 Commission, 7/24/2004, pp. 289]

Entity Tags: Philip T. Hayes, Brian Clark, Florence Engoran

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

After firefighters arrive at the North Tower, janitor William Rodriguez leads some of them up its stairs. Being one of only five people possessing a master key, he opens emergency exit doors as he goes up, allowing people to escape from the building. But between the tower’s 20th and 30th floors he hears a series of explosions. The source of these is unknown. Then, when he reaches the 33rd floor he hears what sounds like heavy equipment being dragged across the floor of the level above. He finds this puzzling, he later says, because the 34th floor is supposed to be empty and has been off limits for weeks due to a construction project. After he reaches the 39th floor, Rodriguez is ordered to turn back by the firefighters with him. He then hears the sound of the second plane hitting the WTC, at 9:03 a.m. Rodriguez also claims he heard an explosion from the North Tower’s basement just seconds before it was hit at 8:46 a.m. (see (8:46 a.m.) September 11, 2001). He will later be credited with saving many lives on 9/11, and be treated as a hero. [Christian Science Monitor, 3/25/2004; Western Morning News, 12/2/2006; Herald (Glasgow), 2/16/2007; Argus (Brighton), 2/26/2007]

Entity Tags: William Rodriguez, World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

The jet fuel that spilled from Flight 11 when it hit the North Tower (see 8:46 a.m. September 11, 2001) has mostly burned up by this time. The National Institute of Standards and Technology (NIST), which investigates the collapses, will say “The initial jet fuel fires themselves lasted at most a few minutes.” [National Institute of Standards and Technology, 9/2005, pp. 183] Engineering professor Forman Williams will say the jet fuel “burned for maybe 10 minutes.” [Popular Mechanics, 3/2005] Flight 11, a Boeing 767, had a fuel capacity of 23,980 gallons, but was only carrying about 10,000 gallons when it hit the WTC. NIST will estimate that less than 1,500 gallons were consumed in a fireball inside the tower and a comparable amount was consumed in the fireballs outside the building. Therefore, approximately 7,000 gallons splashed onto the office furnishings and started fires on various floors. However, after the jet fuel is used up, office fires burn until the building collapses. NIST will calculate that there were about four pounds per square foot of combustibles in the office space, or about 60 tons per floor. Offices in the WTC actually have fewer combustibles than some other similar spaces due to the small number of interior walls and limited bookshelf space. NIST will later find that only three of sixteen perimeter columns it recovers reached a temperature of 250°C and neither of the two core columns it retrieves reached this temperature. NIST will also find that none of the samples it acquires reaches a temperature above 600°C (see August 27, 2003). Although steel does not melt until its temperature is about 1,600°C, it may begin to lose significant strength at over 500°C. [National Institute of Standards and Technology, 9/2005, pp. 20, 29, 24, 77] The jet fuel will also burn up in the South Tower about 10 minutes after it is hit (see 9:13 a.m. September 11, 2001).

Entity Tags: Forman Williams, World Trade Center, National Institute of Standards and Technology

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center

Fire department commanders in the lobby of the North Tower of the World Trade Center instruct an officer with the Port Authority Police Department and building personnel in the North Tower to evacuate the South Tower of the WTC. They do this not because of concern about a plane hitting the South Tower, but because, in their judgment, “the impact of the plane into the North Tower made the entire complex unsafe,” according to the 9/11 Commission Report. The exact time at which the fire chiefs give the instruction is unclear; the 9/11 Commission Report will only state that they have given it “by approximately 8:57.” However, according to the 9/11 Commission, “there is no evidence that this advice was communicated effectively to the building personnel in the South Tower.” [9/11 Commission, 4/19/2004 pdf file; 9/11 Commission, 7/24/2004, pp. 287, 290] All the same, at 9:02 a.m., an announcement will be made over the public address system in the South Tower, telling workers that they can begin an orderly evacuation of the building if conditions warrant it (see 9:02 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 289]

Entity Tags: Port Authority Police Department, New York City Fire Department

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Anthony Whitaker.Anthony Whitaker. [Source: ABC News]Sergeant Alan DeVona, an officer with the Port Authority Police Department (PAPD), calls for the evacuation of the Twin Towers over a PAPD radio channel, and his colleague, Captain Anthony Whitaker, then calls for the evacuation of the entire World Trade Center complex, but their orders are apparently not passed on [Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; 9/11 Commission, 5/18/2004 pdf file; Dwyer and Flynn, 2005, pp. 78-79; National Institute of Standards and Technology, 9/2005, pp. 200-202] DeVona, the PAPD patrol sergeant at the WTC, is currently in the lobby of the North Tower, coordinating with emergency agencies as they arrive there. [Devona, 3/28/2002, pp. 24 pdf file] Whitaker, the PAPD commanding officer at the WTC, is outside the Twin Towers, looking up at the burning North Tower. [Fink and Mathias, 2002, pp. 25; Murphy, 2002, pp. 184]
Officers Request Evacuation of the WTC - At 8:59 a.m., DeVona calls for the evacuation of the Twin Towers. “As soon as we’re able,” he says over the PAPD radio channel, “I want to start a building evacuation, Building 1 [i.e. the North Tower] and Building 2 [i.e. the South Tower], till we find out what caused this.” Immediately after DeVona says this, at 9:00 a.m., Whitaker makes a similar request over the same radio channel. “Let’s begin an evacuation of the entire complex,” he says. “All buildings, copy?” [Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; National Institute of Standards and Technology, 9/2005, pp. 200-201] Unlike DeVona, Whitaker is ordering the evacuation of not just the Twin Towers, “but also the five other buildings throughout the 16-acre complex—the mercantile exchange, offices of major investment banking concerns, and government agencies, including the FBI, the Secret Service, and the CIA,” according to New York Times reporters Jim Dwyer and Kevin Flynn. [Dwyer and Flynn, 2005, pp. 79] Whitaker has decided to evacuate the WTC complex “because of the danger posed by highly flammable jet fuel from Flight 11,” which crashed into the North Tower at 8:46 a.m. (see 8:46 a.m. September 11, 2001), and “because of the magnitude of the calamity in the North Tower,” according to the 9/11 Commission. [9/11 Commission, 5/18/2004 pdf file; 9/11 Commission, 7/24/2004, pp. 293]
Request Is the Second Time Evacuation Is Called For - Whitaker will later say that his current request is the “second time” he has called for the evacuation of the WTC complex. He will recall making his previous request—for “a full-scale evacuation of the entire complex”—shortly after Flight 11 crashed. [Fink and Mathias, 2002, pp. 23-25; Murphy, 2002, pp. 180-181, 184-185] Transcripts of PAPD radio transmissions will show that an evacuation was requested at 8:49 a.m., but only for the upper floors of the North Tower (see 8:49 a.m. September 11, 2001). [Port Authority of New York and New Jersey, 9/11/2001 pdf file; National Institute of Standards and Technology, 9/2005, pp. 195] And according to some accounts, that request was made by DeVona, not Whitaker. [Port Authority of New York and New Jersey, 11/12/2001, pp. 16 pdf file; Devona, 3/28/2002, pp. 24 pdf file; Dwyer and Flynn, 2005, pp. 78]
Officer Repeats Order, for the Written Record - At 9:01 a.m., an officer at the PAPD desk in Building 5 of the WTC asks if they should evacuate their building. DeVona instructs the officer to wait, saying, “Stand by on Building 5.” Whitaker then asks the officer at the PAPD desk if they have started a “chrono log” yet. [Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; National Institute of Standards and Technology, 9/2005, pp. 201] A “chrono” is a written record of what the PAPD is doing. [Murphy, 2002, pp. 182] The officer replies, “That’s affirmative.” At 9:02 a.m., Whitaker repeats his previous instruction, apparently to make sure it is officially recorded. He says: “For the chrono, evacuate all buildings in the complex. You copy? All building in the complex.” The officer at the PAPD desk acknowledges the instruction and then radios all PAPD units in the field, and tells them to evacuate “all tenants in the buildings… at the Trade Center.” [Port Authority of New York and New Jersey, 9/11/2001 pdf file; Port Authority of New York and New Jersey, 11/12/2001, pp. 19 pdf file; National Institute of Standards and Technology, 9/2005, pp. 202]
Orders Not Passed on to Other Agencies - It is unclear whether DeVona and Whitaker’s orders to evacuate the WTC are passed on. Their orders are given over PAPD radio channel W, which cannot be heard by the deputy fire safety directors in the Twin Towers, who are able to make announcements over the buildings’ public address systems. [WTC News, 8/1995 pdf file; 9/11 Commission, 7/24/2004, pp. 293; National Institute of Standards and Technology, 9/2005, pp. 200-202] According to the 9/11 Commission, there is “no evidence” that the orders are “communicated to officers in other Port Authority Police commands or to members of other responding agencies.” [9/11 Commission, 5/18/2004 pdf file] Despite this, an announcement is made over the public address system in the South Tower, advising workers to evacuate, at 9:02 a.m. (see 9:02 a.m. September 11, 2001). Attempts to order workers to evacuate the North Tower are unsuccessful because that building’s public address system was damaged by the plane crash (see (Between 8:47 a.m. and 8:55 a.m.) September 11, 2001). [New York Times, 5/18/2004]

Entity Tags: Alan DeVona, Anthony Whitaker, Port Authority Police Department

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

An announcement is made over the public address system in the South Tower of the World Trade Center, advising workers that they can begin an orderly evacuation of the building if conditions warrant it. [New York Times, 5/17/2004; 9/11 Commission, 7/24/2004, pp. 289] A previous announcement over the public address system instructed people in the South Tower to stay in, or return to, their offices, rather than evacuate (see (8:50 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 287-288; Dwyer and Flynn, 2005, pp. 72] The new announcement begins: “May I have your attention, please. Repeating this message: the situation occurred in Building 1 [i.e. the North Tower].” The announcer then says, “If the conditions warrant on your floor, you may wish to start an orderly evacuation.” [New York Times, 5/17/2004] The announcement is presumably made by Philip Hayes, the deputy fire safety director on duty at the fire command desk in the lobby of the South Tower. A button at the desk enables fire safety directors to deliver announcements over the public address system. [Dwyer and Flynn, 2005, pp. 26]
Identity of Person Who Ordered Evacuation Unclear - The new advice, for tenants to evacuate, does “not correspond to any prewritten emergency instruction,” according to the 9/11 Commission Report. [9/11 Commission, 7/24/2004, pp. 289] It is unclear who told Hayes to make the announcement giving this advice. George Tabeek, the Port Authority’s security manager for the WTC, contacted the fire command desks in the Twin Towers immediately after Flight 11 hit the North Tower, with instructions about what to do. His orders for Hayes, however, were to “keep people inside the South Tower” (see Shortly After 8:46 a.m. September 11, 2001). [New Jersey Star-Ledger, 9/6/2011]
Police Commander Called for Evacuation of WTC - Captain Anthony Whitaker, the Port Authority Police Department (PAPD) commanding officer at the WTC, called for the evacuation of the WTC at 9:00 a.m. (see 8:59 a.m.-9:02 a.m. September 11, 2001). However, his instruction was given over PAPD radio channel W, “which could not be heard by the deputy fire safety director in the South Tower,” according to the 9/11 Commission Report. [Murphy, 2002, pp. 184-185; 9/11 Commission, 7/24/2004, pp. 293; National Institute of Standards and Technology, 9/2005, pp. 201] Furthermore, according to the Port Authority, deputy fire safety directors do not generally take direct orders from the PAPD under the regular chain of command. Therefore, the 9/11 Commission Report will state, it is “not known if [Hayes] received the order by the PAPD to evacuate the complex.” [9/11 Commission, 7/24/2004, pp. 544]
Fire Department Responsible for Ordering Evacuations - According to New York Times reporters Jim Dwyer and Kevin Flynn, “The authority to order an evacuation during a fire normally rests with the fire department.” [Dwyer and Flynn, 2005, pp. 79] In a phone call with his counterpart in the North Tower, at 8:49 a.m., Hayes in fact said he would wait to hear from “the boss from the fire department or somebody” before ordering an evacuation of the South Tower (see 8:49 a.m. September 11, 2001). [Port Authority of New York and New Jersey, 9/11/2001 pdf file; 9/11 Commission, 7/24/2004, pp. 287; Dwyer and Flynn, 2005, pp. 27] But whether someone from the fire department told Hayes to order an evacuation is unknown. It is also unclear how long announcements, advising an evacuation, continue for. Hayes and his counterpart in the North Tower are “making announcements that the situation was serious and that occupants should evacuate immediately” for “[a]s long as the [fire alarm system] was still operational,” according to Fire Engineering magazine. [Fire Engineering, 11/1/2002] However, the 9/11 Commission Report will state, “Evidence suggests that the public address system [in the South Tower] did not continue to function after the building was hit.” This would mean no announcements go out after 9:03 a.m., when Flight 175 hits the tower (see 9:03 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 295] By the time the South Tower collapses (see 9:59 a.m. September 11, 2001), out of around 8,540 people who were originally in the building, 7,940 (93 percent) have made it out and will survive, according to the National Institute of Standards and Technology. [National Institute of Standards and Technology, 9/2005]

Entity Tags: Philip T. Hayes

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

After the first World Trade Center tower is hit, Barry Jennings, a City Housing Authority worker, and Michael Hess, New York’s corporation counsel, head up to the emergency command center of the Mayor’s Office of Emergency Management (OEM), which is on the 23rd floor of WTC 7. [Associated Press, 9/11/2001] The center, opened in 1999, is intended to coordinate responses to various emergencies, including terrorist attacks (see June 8, 1999). [CNN, 6/7/1999] However, Hess and Jennings find no one there. [National Institute of Standards and Technology, 9/2005, pp. 109-110; BBC, 7/6/2008]
Center Is Empty; Jennings Warned to Leave - Jennings will describe that, when he arrives at the emergency command center, “To my amazement, nobody’s there.” He says: “I saw coffee that was still hot, that was still smoldering. They had screens all over the place, but the screens were blank. So I didn’t know what was going on.” He then phones several individuals, including one of his superiors. When Jennings says where he is, the superior responds: “Get out of there. Get out of there now.” Hess then runs back into the center, after having found the stairwell, and says: “We’re the only ones up here. We gotta get out of here.” [Dylan Avery, 2007; BBC, 7/6/2008]
9/11 Commission Claims Command Center Not Evacuated until Later - Yet, according to the 9/11 Commission, “After the South Tower was hit [at 9:03], OEM senior leadership decided to remain in its ‘bunker’ and continue conducting operations, even though all civilians had been evacuated from 7 WTC.” The Commission will claim the emergency command center is not evacuated until 9:30 a.m. (see (9:30 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 305] But according to the London Independent, Hess and Jennings arrive there by the time the South Tower is hit, which suggests the center is evacuated earlier than officially claimed. [Independent, 9/13/2001] Jennings himself will recall, “I had to be inside on the 23rd floor when the second plane hit.” [Dylan Avery, 2007] The possibility that the emergency command center is evacuated earlier than the 9/11 Commission claims is partly confirmed by OEM Commissioner John Odermatt, who later says that after the first plane hit the WTC, he left only two staffers there (see (Soon After 8:46 a.m.-9:35 a.m.) September 11, 2001). [Barrett and Collins, 2006, pp. 34] Jennings and Hess subsequently head down the stairs, but will become trapped in WTC 7, and have to be rescued by firefighters (see 12:10 p.m.-12:15 p.m. September 11, 2001). [National Institute of Standards and Technology, 9/2005, pp. 109-110]

Entity Tags: Michael Hess, Office of Emergency Management, Barry Jennings

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Flight 175 hits the WTC South Tower. The picture was taken from a traffic helicopter.Flight 175 hits the WTC South Tower. The picture was taken from a traffic helicopter. [Source: WABC 7/ Salient Stills]Flight 175 hits the South Tower of the World Trade Center (Tower Two). Seismic records pinpoint the time at six seconds before 9:03 a.m. (rounded to 9:03 a.m.). Hijackers Marwan Alshehhi, Fayez Ahmed Banihammad, Mohand Alshehri, Hamza Alghamdi, and Ahmed Alghamdi presumably are killed instantly, and many more in the tower will die over the next few hours. [New York Times, 9/12/2001; CNN, 9/12/2001; CNN, 9/17/2001; North American Aerospace Defense Command, 9/18/2001; USA Today, 12/20/2001; Federal Emergency Management Agency, 5/1/2002, pp. 1-10; New York Times, 5/26/2002; Associated Press, 8/21/2002; USA Today, 9/2/2002] According to the NIST report, the crash time is 9:02:59. [National Institute of Standards and Technology, 9/2005, pp. 38] According to the 9/11 Commission Report, the crash time is 9:03:11. [9/11 Commission, 7/24/2004, pp. 8] Millions watch the crash live on television. The plane strikes the 77th through 85th floors in the 110-story building. Approximately 100 people are killed or injured in the initial impact; 600 people in the tower eventually die. The death toll is far lower than in the North Tower because about two-thirds of the South Tower’s occupants have evacuated the building in the 17 minutes since the first tower was struck. [USA Today, 12/20/2001; National Institute of Standards and Technology, 9/2005, pp. 5-9, 41] The combined death toll from the two towers is estimated at 2,819, not including the hijackers. [Associated Press, 8/21/2002] The impact severs some columns on the south side of the South Tower. Each of the Twin Towers is designed as a “tube-in-tube” structure and the steel columns which support its weight are arranged around the perimeter and in the core. The plane, which is traveling at an estimated speed of around 500 mph (see October 2002-October 2005), severs 33 of the building’s 236 perimeter columns and damages another one. [National Institute of Standards and Technology, 9/2005, pp. 39] The perimeter columns bear about half of the tower’s weight, so the damage to them reduces the tower’s ability to bear gravity loads by about 7.1 percent. [National Institute of Standards and Technology, 9/2005, pp. 6] The actual damage to the 47 core columns is not known, as there are no photographs or videos of it, but there will be much speculation about this after 9/11. It will be suggested that some parts of the aircraft may be able to damage the core even after crashing through the exterior wall (see 8:46 a.m. September 11, 2001). [National Institute of Standards and Technology, 9/2005, pp. 107] According to NIST’s base case model, five of the core columns are severed and another five suffer some damage. [National Institute of Standards & Technology, 9/2005, pp. 235 pdf file] This may reduce the tower’s ability to bear loads by a further approximately 8 percent, meaning that the aircraft impact accounted for a loss of about 15 percent of the building’s strength. This damage will be cited as an event contributing to the building’s collapse after 9/11 (see October 23, 2002 and October 19, 2004). NIST’s base case estimate of damage to the North Tower’s core will be similar, even though the aircraft impact there was dissimilar (see 8:46 a.m. September 11, 2001). Flight 11 hit the North Tower’s core head on, whereas Flight 175 only hits the corner of the South Tower’s core. [National Institute of Standards and Technology, 9/2005, pp. 20-23, 38-41] In addition, some of the fireproofing on the steel columns and trusses may be dislodged (see 8:46 a.m. September 11, 2001). [National Institute of Standards & Technology, 9/2005, pp. xxxvi, 83 pdf file] Photographs and videos of the towers will not show the state of fireproofing inside the buildings, but the National Institute of Standards and Technology (NIST) will try to estimate the damage to fireproofing using a series of computer models. Its severe case model (see (October 2002-October 2005)) will predict that 39 of the 47 core columns are stripped of their fireproofing on one or more floors and that fireproofing is stripped from trusses covering 80,000 ft2 of floor area, the equivalent of about two floors. NIST will say that the loss of fireproofing is a major cause of the collapse (see April 5, 2005), but only performs 15 tests on fireproofing samples (see October 26, 2005). [National Institute of Standards and Technology, 9/2005, pp. 41] According to NIST, less fireproofing is stripped from the North Tower (see 8:46 a.m. September 11, 2001).

Entity Tags: World Trade Center, Marwan Alshehhi, Fayez Ahmed Banihammad, Hamza Alghamdi, National Institute of Standards and Technology, Ahmed Alghamdi, Mohand Alshehri

Timeline Tags: 9/11 Timeline

Category Tags: Key Day of 9/11 Events, All Day of 9/11 Events, Flight AA 77, Flight UA 175, Flight UA 93, George Bush, World Trade Center, Marwan Alshehhi, Other 9/11 Hijackers, WTC Investigation

Jim Pierce.Jim Pierce. [Source: AON]Jim Pierce, a cousin of President Bush, sees the South Tower of the WTC hit from the nearby Millennium Hotel. Pierce is the managing director of the AON Corporation, an insurance company with offices in WTC 2. He had arranged a business conference, to be held on the tower’s 105th floor this morning. However, the previous night, the conference was moved to the Millennium Hotel because the group was too large for the original room. According to a book by former First Lady Barbara Bush, Pierce later learns that 12 people are in the room where the meeting was originally planned to take place when the South Tower is hit, and only one of them survives. [Boston Globe, 2001; Ananova, 9/18/2001; Newsweek, 10/27/2003] Another AON Corporation meeting is taking place on the 105th floor of the South Tower, run by business executive Mary Wieman. Of about 50 participants in attendance, only six are able to escape. [New York Times, 12/17/2001; USA Today, 9/2/2002]

Entity Tags: AON Corporation, Jim Pierce

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

According to a soldier at the scene, WTC Building 7 is evacuated before the second tower is hit. [Fort Detrick Standard, 10/18/2001] The National Institute of Standards and Technology (NIST) states, “As the second aircraft struck WTC 2, a decision was made to evacuate WTC 7.” This would be just after the Port Authority Police Department called for the evacuation of the entire WTC complex (see 8:59 a.m.-9:02 a.m. September 11, 2001). But by this time, “many WTC 7 occupants [have] already left the building and others [have] begun a self-evacuation of the building.” [National Institute of Standards and Technology, 9/2005, pp. 109] All individuals in the Secret Service’s New York field office, located in WTC 7, were ordered to evacuate after the first attack, and they are in the process of doing so when the second plane hits the South Tower. [PCCW Newsletter, 3/2006] The Secret Service has a Stinger missile secretly stored in the WTC, to be used to protect the president if there were an attack on the city when he visits it. [Weiss, 2003, pp. 379] Presumably, this missile is abandoned with the evacuation. The Office of Emergency Management’s command center, on the 23rd floor of WTC 7, is not evacuated until later, at 9:30 a.m. (see (9:30 a.m.) September 11, 2001).

Entity Tags: World Trade Center, US Secret Service

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Mark Loizeaux.Mark Loizeaux. [Source: Dan Gross / Washington Technology]Immediately after seeing the attacks on the the World Trade Center on television, Mark Loizeaux, the president of leading building demolition firm Controlled Demolition Inc (CDI), tries to contact government officials to warn them that the Twin Towers will probably collapse. [US News and World Report, 6/22/2003; New Scientist, 7/24/2004] Loizeaux will later recall his initial reaction to the crashes in New York. After the first tower is hit, he will say, “I told Doug [Loizeaux, his brother] immediately that the tower was coming down, and when the second tower was hit, that it would follow.” According to US News and World Report, “Horrified, the Loizeaux brothers watched first responders streaming into the doomed towers and tried frantically, and unsuccessfully, to phone in warnings.” [US News and World Report, 6/22/2003] Mark Loizeaux will recall, “I still had some cell phone numbers, so when the second plane hit I said, ‘Start calling all the cell phones, tell them that the building is going to come down.’” However: “It was frenetic, nobody could get through even with speed dialling.… Of course, building number 7, where the emergency management headquarters was, was on fire. I’d been in that office two months before.” Loizeaux then phones a couple of people on the National Research Council committee involved in assessing the impact of explosives. They ask him, “What do you think this is, that they’re going to fail, that they’re both going to fail?” Loizeaux will recall: “The expression around was they’re going to pancake down, almost vertically. And they did. It was the only way they could fail. It was inevitable.” [New Scientist, 7/24/2004] Soon after the attacks, Loizeaux, as a recognized expert, will be called upon to comment on the fall of the WTC towers. [Construction (.com), 9/13/2001] In addition, his firm will be involved with the clearing of Ground Zero. (It was also tasked with bringing down the remnants of the Murrah Federal Building in Oklahoma City after its partial destruction in 1995 (see 8:35 a.m. - 9:02 a.m. April 19, 1995 and 7:01 a.m. May 23, 1995).) [Construction (.com), 10/1/2001]

Entity Tags: Mark Loizeaux, Douglas Loizeaux

Category Tags: All Day of 9/11 Events, World Trade Center

The second plane hitting the World Trade Center (see 9:03 a.m. September 11, 2001) causes internal alarms to go off in WTC Building 7, located just a few hundred feet away from the Twin Towers. The alarms warn there is no water pressure and that the building’s emergency power generator has been activated. Office of Emergency Management (OEM) staff, based in Building 7, immediately request air security over New York. They are told that federal support is on its way, but the Federal Aviation Administration instructs them to use NYPD and Port Authority Police Department air assets to clear the airspace around the WTC. They are also warned that the Kennedy Airport control tower is reporting an unaccounted for plane heading towards New York. A report by the Mineta Transportation Institute will claim that this plane is Flight 93, which later crashes in Pennsylvania. [Jenkins and Edwards-Winslow, 9/2003, pp. 16] However, Flight 93 is still flying west at this time, and only reverses course and heads towards Washington at around 9:36 a.m. (see (9:36 a.m.) September 11, 2001). According to at least one person at the scene, WTC 7 is evacuated around this time due to the reports of this incoming third plane (see (9:03 a.m.) September 11, 2001). [Jems And FireRescue Supplement, 3/2002, pp. 68 pdf file]

Entity Tags: Office of Emergency Management, World Trade Center, Federal Aviation Administration

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

In the lobby of the north WTC tower, just after the South Tower is hit, Fire Commissioner Thomas Von Essen speaks briefly to Fire Chief Ray Downey. According to Von Essen, Downey—who is a highly respected expert on building collapses—says to him, “You know, these buildings can collapse.” Von Essen later recalls, “He just said it in passing, not that these buildings will collapse in 40 minutes and we have to get everybody out of here, or not that they’ll collapse by tomorrow, or not that they necessarily will collapse at all. Just that they can collapse.” [Fink and Mathias, 2002, pp. 229; 9/11 Commission, 5/18/2004] But other firefighters do not appear to have shared this concern. According to the National Institute of Standards and Technology (NIST), the Fire Department command officers who are planning for operations inside the Twin Towers expect that there will “be localized collapse conditions on the damaged fire floors,” but do “not expect that there [will] be any massive collapse conditions or complete building collapse.” At the end of its three-year investigation of the WTC collapses, NIST will report, “No one interviewed indicated that they thought that the buildings would completely collapse.” [National Institute of Standards and Technology, 9/2005, pp. 72 and 75-76] In fact, Deputy Fire Commissioner Lynn Tierney will meet up with Downey and others—including Von Essen—slightly later, on the south lawn of the WTC complex, where a new command center is set up. At that time, according to Tierney, Downey will only be concerned that the 360-foot antenna atop the North Tower will fall, and “No one ever thought the towers were going to come down.” [Pittsburgh Tribune-Review, 9/11/2006] However, shortly before the first tower comes down, EMT Richard Zarrillo will be asked to relay a message to some senior firefighters that the mayor’s Office of Emergency Management “says the buildings are going to collapse” (see (Before 9:59 a.m.) September 11, 2001). And later in the day, Mayor Giuliani will recount that around the same time, he had been told “that the World Trade Center was going to collapse” (see (Before 9:59 a.m.) September 11, 2001). The 9/11 Commission will state, “The best estimate of one senior [fire] chief, provided to the chief of the department sometime between 9:25 and 9:45, was that there might be a danger of collapse [of the South Tower] in a few hours, and therefore units probably should not ascend above floors in the sixties.” The Commission does not state, however, whether this fire chief was referring to a total building collapse or just a localized collapse. [9/11 Commission, 5/19/2004] Ray Downey is killed when the second tower collapses at 10:28 a.m. [New York Times, 9/9/2005]

Entity Tags: Lynn Tierney, New York City Fire Department, Ray Downey, National Institute of Standards and Technology, Thomas Von Essen

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Brian Clark.Brian Clark. [Source: CTV]Brian Clark, the executive vice president of brokerage firm Euro Brokers, was on the 84th floor of the South Tower, where his firm’s offices are, when Flight 175 crashed into it. He had headed out, going down Stairway A, which is the only staircase in the tower that remains intact from top to bottom, and was soon joined by Stanley Praimnath, who also works in the South Tower. They reach a point that Clark later guesses to have been around the 77th or 78th floor, where the stairway walls are cracked, allowing them to look through. This would be around the lower end of the floors where the plane impacted. However, Clark sees no large fire. He later says, “[Y]ou could look through the cracks and see flames. They were just quietly licking up, not a roaring inferno. And there was some smoke there, but again I think the stairs were pressurized, pushing the air out so we had less smoke in the stairway than you might imagine.” [BBC, 3/7/2002; New York Times, 5/26/2002; Sun, 9/6/2002; 9/11 Commission, 5/18/2004] This apparently contradicts later claims that the tower was subjected to “extreme fires” prior to its collapse. [New York Times, 10/20/2004] Firefighter Orio Palmer will make it up to this level of the tower later on, and also report only finding small fires there (see 9:52 a.m. September 11, 2001). Clark and Praimnath continue down the stairs and make it out just minutes before the collapse. They are two of only four people who were at or above the impact zone after Flight 175 hit, who are able to escape from the South Tower. [CNN, 9/9/2002] A further 14 people are able to get out of the building from its 78th floor, which is the lower part of the crash zone. [Dwyer and Flynn, 2005, pp. 255]

Entity Tags: Stanley Praimnath, World Trade Center, Brian Clark

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

The jet fuel that spilled from Flight 175 when it hit the South Tower (see 9:03 a.m. September 11, 2001) has mostly burned up by this time. The National Institute of Standards and Technology (NIST), which later investigates the collapses, will say the “initial jet fuel fires themselves lasted at most a few minutes.” [National Institute of Standards and Technology, 9/2005, pp. 183] Engineering professor Forman Williams will say the jet fuel “burned for maybe 10 minutes.” [Popular Mechanics, 3/2005] Flight 175, a Boeing 767, had a capacity of 23,980 gallons, but was only carrying about 9,100 gallons of fuel when it hit the WTC. NIST will estimate that less than 1,500 gallons were consumed in a fireball inside the tower and 910 to 2,275 gallons were consumed in the fireballs outside the building. Approximately 6,100 gallons therefore splashed onto the office furnishings and started fires on various floors. However, after the jet fuel is used up, office fires burn until the building collapses. NIST will calculate that there were about four pounds per square foot of combustibles in the office space, or about 60 tons per floor. Offices in the WTC actually had fewer combustibles than other similar spaces due to the small number of interior walls and limited bookshelf space. NIST will later find that only three of sixteen perimeter columns it recovers reached a temperature of 250°C and neither of the two core columns it retrieves reached this temperature. NIST will also find that none of the samples it acquires reached a temperature above 600°C (see August 27, 2003). While steel does not melt until its temperature is about 1,600°C, it may begin to lose significant strength at over 500°C. [National Institute of Standards and Technology, 9/2005, pp. 29, 38, 42, 77] The jet fuel also burned up in the North Tower about 10 minutes after it was hit (see 8:57 a.m. September 11, 2001). When a group of firefighters reach the bottom impact floor in the South Tower just before collapse, they only find two isolated fires (see 9:52 a.m. September 11, 2001).

Entity Tags: World Trade Center, National Institute of Standards and Technology, Forman Williams

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center

Barry JenningsBarry Jennings [Source: Public domain]Barry Jennings, a City Housing Authority worker, and Michael Hess, New York’s corporation counsel, hear unexplained explosions inside World Trade Center Building 7, where they become trapped. [UPN 9, 9/11/2001; BBC, 7/6/2008] The two men went up to the emergency command center on the 23rd floor of WTC 7 after the first attack occurred (see (Shortly Before 9:03 a.m.) September 11, 2001). [Associated Press, 9/11/2001; Independent, 9/13/2001] At some point, the power goes out in the building. They then start walking down the stairs to get out. According to Hess, when the two men get down to the eighth floor, “there was an explosion and we’ve been trapped on the eighth floor with smoke, thick smoke, all around us, for about an hour and a half.” [UPN 9, 9/11/2001] Jennings will also recall hearing explosions. He will say: “I made it to the sixth floor and there was an explosion. The explosion was beneath me.” [Dylan Avery, 2007] He will add, “[T]he staircase that I was standing on just gave way,” and, “Then we made it back to the eighth floor, I heard some more explosions.” [BBC, 7/6/2008] Jennings says to Hess: “This is it; we’re dead. We’re not gonna make it out of here.” [Penn State Public Broadcasting, 3/1/2002] The National Institute of Standards and Technology (NIST) will claim the two men head down the stairs after 9:59, when the first collapse occurs, and then become trapped around the time the second tower collapses, at 10:28. [National Institute of Standards and Technology, 9/2005, pp. 109-110] But according to the London Independent, they start heading down the stairs after the second attack at 9:03, which suggests the explosions begin earlier on. [Independent, 9/13/2001] Jennings will confirm this, saying that when he hears the first explosion, “Both [of the Twin Towers] were still standing,” meaning it occurs before 9:59. He says: “I was trapped in there when both [Twin Towers] came down.… All this time I’m hearing explosions.” [Dylan Avery, 2007] The cause of the explosions is unclear. Later on, firefighters will rescue Hess and Jennings from the building (see 12:10 p.m.-12:15 p.m. September 11, 2001). [National Institute of Standards and Technology, 9/2005, pp. 109-110]

Entity Tags: Barry Jennings, Michael Hess

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Fire Chief Ray Downey is on the corner of West Street and Vesey Street, where the chiefs in charge of the response at the WTC have gathered to survey the scene. [Downey, 2004, pp. 233] Downey is the head of the New York Fire Department’s Special Operations Command, where he has pioneered techniques for responding to terrorist attacks. [CBS News, 9/11/2006] Reportedly, he had felt certain that a big attack on American soil was due. Worst in his mind had been “a situation in which there was a secondary device timed to explode after rescuers had rushed to the scene” of a terrorist attack. As he now checks in with the fire chiefs who are trying to put together a response plan, he tells them “he is worried about secondary devices in the towers, explosive devices that could hurt the firemen.” [Downey, 2004, pp. 224 and 233] Shortly after the South Tower comes down, Downey will in fact say he thought bombs in the building had caused it to collapse (see Shortly After 9:59 a.m. September 11, 2001). [City of New York, 12/6/2001] He will be killed when the North Tower collapses at 10:28 a.m. [New York Times, 9/9/2005]

Entity Tags: Ray Downey

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

The exterior wall on the east side of the World Trade Center’s South Tower apparently bows before the building collapses. The first inquiry into the collapse, by the Federal Emergency Management Agency and the American Society of Civil Engineers, states that the perimeter walls bow outward. “Expansion of floor slabs and framing results in outward deflection of columns and potential overload,” the investigation concludes. [Federal Emergency Management Agency, 5/1/2002, pp. 2-25] However, a subsequent report by the National Institute of Standards and Technology states that the east wall of the South Tower bows inward. In places the wall is said to bow inward by between seven and nine inches at floor 80, and NIST interprets this bowing to mean that the floors must be sagging. NIST will find that the sagging and bowing are two of the seven major factors that led to the collapse of each tower, as the bowing walls are no longer able to support their share of the buildings’ weight, causing the buildings to tilt and the upper sections to fall. [National Institute of Standards and Technology, 9/2005, pp. 43-46, 87] A wall in the North Tower also apparently bows before the building collapses (see 10:23 a.m. September 11, 2001).

Entity Tags: Federal Emergency Management Agency, World Trade Center, National Institute of Standards and Technology

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center

According to the 9/11 Commission, the two fighters launched from Otis Air Force Base (see 8:46 a.m. September 11, 2001) arrive over Manhattan at this time, after exiting their holding pattern off the Long Island coast at 9:13 a.m. They then establish a combat air patrol (CAP) over New York. The commission bases this conclusion on its analysis of FAA radar data and interviews with the two Otis pilots. [9/11 Commission, 7/24/2004, pp. 24 and 460; 9/11 Commission, 8/26/2004, pp. 26 and 92 pdf file] However, numerous eyewitnesses on the ground will report first noticing fighters over New York significantly later, more than an hour after the 9/11 Commission claims according to some accounts (see (9:45 a.m.-10:45 a.m.) September 11, 2001).

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Thomas Von Essen.Thomas Von Essen. [Source: Publicity photo]The headquarters of New York’s Office of Emergency Management (OEM), which is on the 23rd floor of WTC Building 7, is evacuated at approximately 9:30 a.m., according to the 9/11 Commission. The headquarters was opened in 1999 and was specifically intended to coordinate the city’s response to disasters such as terrorist attacks (see June 8, 1999). A senior OEM official orders the evacuation after being told by a Secret Service agent that additional commercial planes are unaccounted for (see (9:30 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 283-284 and 305] OEM personnel do not initially respond to the evacuation order with a sense of urgency. According to a 2003 report by the Mineta Transportation Institute, “They calmly collected personal belongings and began removing OEM records, but they were urged to abandon everything and leave the building quickly.” [Jenkins and Edwards-Winslow, 9/2003, pp. 16] However, there are contradictory accounts of when the OEM command center is evacuated. The National Institute of Standards of Technology (NIST) claims the evacuation happens slightly later than stated by the 9/11 Commission, at “approximately 9:44 a.m.” [National Institute of Standards and Technology, 9/2005, pp. 109] Other accounts suggest it may have happened before 9:03, when the second attack occurred (see (Soon After 8:46 a.m.-9:35 a.m.) September 11, 2001 and (Shortly Before 9:03 a.m.) September 11, 2001). Fire Commissioner Thomas Von Essen will arrive at WTC 7 shortly before the collapse of the South Tower, looking for Mayor Giuliani. Learning that the OEM headquarters has been evacuated, he later claims that he thinks, “How ridiculous. We’ve got a thirteen-million-dollar command center and we can’t even use it.” [Essen, 2002, pp. 26] He says in frustration, “How can we be evacuating OEM? We really need it now.” He will later tell an interviewer that he’d headed for the OEM headquarters because, “I thought that was where we should all be because that’s what [it] was built for.” [Fink and Mathias, 2002, pp. 230] All civilians were evacuated from WTC 7 earlier on, around the time the second WTC tower was hit (see (9:03 a.m.) September 11, 2001).

Entity Tags: US Secret Service, Thomas Von Essen, Office of Emergency Management

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Joseph Callan.Joseph Callan. [Source: FDNY]Emergency responders in the lobby of the north WTC tower hear an unconfirmed report of a third plane heading toward New York. Consequently, Assistant Fire Chief Joseph Callan orders all firefighters to evacuate the tower. The third plane report is soon found to be incorrect. One firefighter tells a colleague over radio, “That plane is ours, I repeat, it is ours.” Rescue operations therefore continue. [New York Times, 7/7/2002; New York City Fire Department, 8/19/2002, pp. 32; Fire Engineering, 9/2002; Associated Press, 11/16/2002] The source of the incorrect report is apparently Richard Rotanz, the deputy director of the New York Office of Emergency Management (OEM), who is reportedly in the OEM command center on the 23rd floor of WTC Building 7. A Secret Service agent in WTC 7 reportedly told him there were unconfirmed reports of other planes in the air. When OEM Director Richard Sheirer called Rotanz some time after the second WTC tower was hit, Rotanz relayed this information, telling him there were “still planes unaccounted for that may [be] heading for New York.” Sheirer then told people in the North Tower lobby “that another plane was on the way.” Journalists Wayne Barrett and Dan Collins, in their book Grand Illusion, blame Sheirer for “instantly converting unspecific information into a very specific false alarm.” This false alarm quickly ends up on fire and police department dispatches. Sheirer is apparently so unnerved by it that he instructs the police department aviation unit to not let another plane hit the WTC. As he will later tell the 9/11 Commission, though, “We were grasping at straws,” since no police helicopter could “stop a commercial jet going over 400 miles per hour.” [Firehouse Magazine, 9/2/2002; 9/11 Commission, 5/18/2004 pdf file; Barrett and Collins, 2006, pp. 32-33] Emergency medical technician Richard Zarrillo is currently in WTC 7, and is informed by an OEM rep there of the alleged third plane inbound for New York. While the rest of Building 7 was evacuated earlier on (see (9:03 a.m.) September 11, 2001), this false threat reportedly leads to the evacuation of the OEM command center as well (see (9:30 a.m.) September 11, 2001). [City of New York, 10/25/2001] (However, some accounts indicate the command center may have been evacuated earlier (see (Soon After 8:46 a.m.-9:35 a.m.) September 11, 2001 and (Shortly Before 9:03 a.m.) September 11, 2001).) Soon after hearing this false report of a third inbound plane, Mayor Rudolph Giuliani, Police Commissioner Bernard Kerik, and OEM Director Richard Sheirer will all leave the North Tower lobby and relocate to a temporary command post on Barclay Street (see (9:50 a.m.-10:10 a.m.) September 11, 2001). [Kerik, 2001, pp. 334; 9/11 Commission, 5/18/2004 pdf file; Barrett and Collins, 2006, pp. 342]

Entity Tags: Richard Zarrillo, Joseph Callan, Richard Rotanz, Richard Sheirer

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

According to the accounts of numerous witnesses on the ground near the World Trade Center, military fighter jets are first noticed flying over Manhattan either shortly before or soon after the second collapse, at 10:28 a.m. Some witnesses recall fighters arriving just before this collapse:
bullet Emergency medical technicians Dulce McCorvey and Michael D’Angelo hear fighters flying over Manhattan at unspecified times after the first tower’s collapse. [City of New York, 10/3/2001; City of New York, 10/24/2001]
bullet Fire Lieutenant Sean O’Malley and firefighters Pete Giudetti and Dan Potter notice jet fighters flying overhead soon before the second collapse. [City of New York, 10/12/2001; City of New York, 12/6/2001; Smith, 2002, pp. 49-50]
Other witnesses say the fighters arrive soon after this collapse:
bullet Deputy Fire Chief Robert Browne, police officer Peter Moog, and emergency medical technicians Richard Zarrillo and Jason Katz notice fighters overhead immediately after, or fairly soon after, the second tower’s collapse. [City of New York, 10/24/2001; City of New York, 10/25/2001; City of New York, 12/20/2001; Fink and Mathias, 2002, pp. 79-80]
bullet Mayor Rudolph Giuliani, Police Commissioner Bernard Kerik, and Office of Emergency Management Director Richard Sheirer are heading north together after leaving their temporary command post on Barclay Street (see (9:50 a.m.-10:10 a.m.) September 11, 2001). In some accounts, all three of them recollect hearing the first military jets overhead soon after the second tower’s collapse. [Kerik, 2001, pp. 339-340; Giuliani, 2002, pp. 14; 9/11 Commission, 5/18/2004 pdf file] However, according to another account, Giuliani hears the first jet slightly earlier, at around 10:20 a.m. And, in his private testimony before the 9/11 Commission, Kerik claims to have heard a fighter jet coming when he was heading to the temporary command post on Barclay Street, i.e. shortly before 9:50 a.m. [Barrett and Collins, 2006, pp. 348-349]
A few witnesses claim the fighters arrive earlier on, before the first collapse at 9:59 a.m.:
bullet Emergency medical technician Frank Puma and Port Authority Freedom of Information Administrator Cathy Pavelec say they see fighter jets overhead at unspecified times before the first collapse. [City of New York, 12/12/2001; Fink and Mathias, 2002, pp. 68]
The fighter(s) are presumably the F-15s launched from Otis Air Force Base at 8:46 a.m. (see 8:46 a.m. September 11, 2001). However, the 9/11 Commission will claim that these arrived over Manhattan at 9:25 a.m. (see 9:25 a.m. September 11, 2001), which is significantly earlier than most of the witnesses on the ground recall.

Entity Tags: Dulce McCorvey, Jason Katz, Frank Puma, Dan Potter, Sean O’Malley, Pete Giudetti, Peter Moog, Rudolph (“Rudy”) Giuliani, Robert Browne, Richard Sheirer, Michael D’Angelo, Cathy Pavelec, Richard Zarrillo, Bernard Kerik

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

A man who is on the 105th floor of the South Tower calls emergency 9-1-1 to report that floors below his location, “in the 90-something floor,” have collapsed. The 9-1-1 operator types a record of this call into the Special Police Radio Inquiry Network (SPRINT) data link, which will be passed on to the New York fire department’s Emergency Medical Service (EMS). It isn’t known when the call is made exactly, but the EMS Dispatch computer apparently receives the call record at this time. However, because it is classified as a “supplement message,” it is not yet read by anyone. The police dispatcher dealing with the area around the WTC also receives the call record, but misinterprets it as meaning that the floor the person is on has collapsed. EMS dispatchers are dealing with an enormous volume of calls as well as performing many other tasks under extreme pressure during the crisis, so a report later concludes that the EMS operators didn’t have the time to review the information before the collapse of the South Tower at 9:59 (see 9:59 a.m. September 11, 2001), and the fire chiefs never received the information. [New York City Fire Department, 8/19/2002]

Entity Tags: World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center

About ten minutes prior to its collapse, a New York Police Department (NYPD) helicopter unit reports over the Special Operations Division radio channel that “large pieces” are falling from the South Tower. While police hear this transmission, the fire department does not, and there is no police representative at the Fire Department of New York (FDNY) command post to pass the information on. [Fire Engineering, 9/2002; National Institute of Standards and Technology, 9/2005, pp. 95] None of the NYPD helicopter pilots predict the South Tower collapse in advance. [9/11 Commission, 7/24/2004, pp. 304]

Entity Tags: New York City Police Department, World Trade Center, New York City Fire Department

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Molten metal pouring out of the side of the World Trade Center.Molten metal pouring out of the side of the World Trade Center. [Source: Cameraplanet]Video footage later reveals that in the minutes immediately before the collapse of the WTC’s South Tower, a stream of molten metal starts pouring out of a window opening around the northeast corner of its 80th floor. FEMA later suggests that this is “possibly aluminum from the airliner,” and comments, “This is of particular interest because, although the building collapse appears to have initiated at this floor level, the initiation seems to have occurred at the southeast rather than the northeast corner.” [Civil Engineering, 5/2002; Federal Emergency Management Agency, 5/1/2002, pp. 2-34; Dwyer and Flynn, 2005, pp. 207] According to the National Institute of Standards and Technology, “The composition of the flowing material can only be the subject of speculation, but its behavior suggests it could have been molten aluminum.” [Pitts, Butler, and Junker, 9/2005, pp. 375] However physics professor Steven E. Jones will in 2006 dispute this, saying that molten aluminum is silvery and never turns yellow, like what is in the video footage. He will instead claim the presence of this molten metal supports the theory that explosives, specifically thermite, are what caused the Twin Towers to collapse. He says thermite can cause steel to melt and become yellowish. [Deseret Morning News, 4/10/2006]

Entity Tags: World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center

Ronald Bucca.
Ronald Bucca. [Source: Public domain]Two firefighters climbing up the South Tower, Orio Palmer and Ronald Bucca, have reached its 78th floor, the lower end of the impact zone where Flight 175 hit. [New York Times, 8/4/2002] They are just two floors below the level where, minutes later, its collapse initiates. [Federal Emergency Management Agency, 5/1/2002, pp. 2-34] Over radio, Palmer tells firefighter Joseph Leavey, “We’ve got two isolated pockets of fire. We should be able to knock it down with two lines.” [Dwyer and Flynn, 2005, pp. 206] The fact that they reached so high up the tower only comes to light almost a year later, when a tape of radio communications from 9/11 is made public (see August 4, 2002). The New York Times will report “[N]owhere on the tape is there any indication that firefighters had the slightest indication that the tower had become unstable or that it could fall.” [New York Times, 11/9/2002] Palmer’s communication appears to contradict claims that “extreme fires” contributed to the tower’s collapse. [BBC, 9/13/2001; New York Times, 10/20/2004] Ronald Bucca, a Special Forces veteran, had actually conducted his own private research into Islamic militancy following the 1993 WTC bombing. He’d even taken time, in 1996, to attend the beginning of the trial of Ramzi Yousef, a mastermind of the bombing (see September 5, 1996). [Lance, 2003, pp. 180-183, 333-334]

Entity Tags: World Trade Center, Orio Palmer, Ronald Bucca

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

Fireman Mike Kehoe heads upstairs while others flee downstairs. Kehoe luckily survived the building collapses.Fireman Mike Kehoe heads upstairs while others flee downstairs. Kehoe luckily survived the building collapses. [Source: John Labriola]In the lobby of Building 7 of the WTC, EMS Division Chief John Peruggia is in discussion with Fire Department Captain Richard Rotanz and a representative from the Department of Buildings. As Peruggia later describes, “It was brought to my attention, it was believed that the structural damage that was suffered to the [Twin] Towers was quite significant and they were very confident that the building’s stability was compromised and they felt that the North Tower was in danger of a near imminent collapse.” Peruggia grabs EMT Richard Zarrillo and tells him to pass on the message “that the buildings have been compromised, we need to evacuate, they’re going to collapse.” Zarrillo heads out to the fire command post, situated in front of 3 World Financial, the American Express Building, where he relays this message to several senior firefighters. He says, “OEM says the buildings are going to collapse; we need to get out.” (OEM is the Mayor’s Office of Emergency Management, which has its headquarters in WTC 7.) Fire Chief Pete Ganci’s response is, “who the f___ told you that?” Seconds later, they hear the noise of the South Tower as it collapses. [City of New York, 10/23/2001; City of New York, 10/25/2001; City of New York, 10/25/2001; City of New York, 11/9/2001] Others also appear to have been aware of the imminent danger. Fire Chief Joseph Pfeifer, who is at the command post in the lobby of the North Tower, says, “Right before the South Tower collapsed, I noticed a lot of people just left the lobby, and I heard we had a crew of all different people, high-level people in government, everybody was gone, almost like they had information that we didn’t have.” He says some of them are moving to a new command post across the street. [City of New York, 10/23/2001; Firehouse Magazine, 4/2002; Dwyer and Flynn, 2005, pp. 214] Mayor Giuliani also says he receives a prior warning of the first collapse, while at his temporary headquarters at 75 Barclay Street (see (Before 9:59 a.m.) September 11, 2001).

Entity Tags: Richard Rotanz, Joseph Pfeifer, John Peruggia, World Trade Center, Richard (“Dick”) Cheney

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, Key Day of 9/11 Events, World Trade Center

People inside the World Trade Center flee down a stairway.People inside the World Trade Center flee down a stairway. [Source: Shannon Stapleton]Almost all the occupants of the South Tower who are able to evacuate the building have done so and have crossed the street to safety. Only 11 occupants who were below the impact floors are still in the building when it collapses. However, 619 building occupants in or above the impact zone have either already died or perish in the collapse, as do many emergency workers. [National Institute of Standards and Technology, 9/2005, pp. xxxix, 44] Most workers in the North Tower also leave the building before it collapses (see 10:27 a.m. September 11, 2001).

Entity Tags: World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center, WTC Investigation

Some witnesses near the World Trade Center feel the ground shaking just before the South Tower starts to collapse:
bullet EMT Joseph Fortis is heading across West Street, when, he says, “the ground started shaking like a train was coming.” He then looks up and sees the South Tower starting to collapse. [City of New York, 11/9/2001]
bullet Lonnie Penn, another EMT, is outside the Marriott Hotel, which is adjacent to the North Tower. He and his partner “felt the ground shake. You could see the towers sway and then it just came down.” [City of New York, 11/9/2001]
bullet Bradley Mann is at the EMS staging area on Vesey Street. He says, “Shortly before the first tower came down I remember feeling the ground shaking. I heard a terrible noise, and then debris just started flying everywhere.” [City of New York, 11/7/2001]
bullet Battalion Chief Brian O’Flaherty is walking into the lobby of the Marriott Hotel. He says, “I hear a noise. Right after that noise, you could feel the building start to shudder, tremble, under your feet.” He then hears the “terrible noise” of the South Tower collapsing. [City of New York, 1/9/2002] Witnesses will also notice the ground shaking before the North Tower collapses (see Shortly Before 10:28 a.m. September 11, 2001).

Entity Tags: Joseph Fortis, Lonnie Penn, Bradley Mann, Brian O’Flaherty

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center

Shanthy Nambiar, a reporter for BridgeNews in New York, is standing on Vesey Street, beneath World Trade Center Building 7. She hears someone shout, “You guys shouldn’t be in this area.” As she later recalls, “Police officers ordered people to start fleeing the area, saying the towers were in danger of collapse.” She runs north one block and then sees the South Tower coming down. [Casey, 2001, pp. 156 and 315] Although a New York City Police Department (NYPD) helicopter has reported “large pieces” falling from the South Tower (see (9:49 a.m.) September 11, 2001), the 9/11 Commission states, “Prior to 9:59, no NYPD helicopter pilot predicted that either tower would collapse.” [9/11 Commission, 7/24/2004, pp. 304] Why these officers believed in advance that the towers were in danger of collapsing is therefore unclear.

Entity Tags: Shanthy Nambiar, New York City Police Department

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Large amounts of gold are stored in vaults in the massive basement below the WTC, and some of this is being transported through the basement this morning. Several weeks later, recovery workers will discover hundreds of ingots in a service tunnel below WTC 5, along with a ten-wheel lorry and some cars (which were, presumably, transporting the gold) (see (Mid-October-mid November 2001)). The lorry and cars had been crushed by falling steel, but no bodies will be reported found with them, so presumably they were abandoned before the first WTC collapse, at 9:59 a.m. [New York Daily News, 10/31/2001; London Times, 11/1/2001]

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Will Jimeno.Will Jimeno. [Source: Todd Plitt / USA Today]Some witnesses reportedly see a massive fireball at ground level, coming from the South Tower just before it starts to collapse. According to a report by the Mineta Transportation Institute (a research institute founded by Transportation Secretary Norman Mineta), “People inside the South Tower felt the floor vibrate as if a small earthquake were occurring.… The vibration lasted for about 30 seconds. The doors were knocked out, and a huge ball of flame created by the exploding diesel fuel from the building’s own supply tank shot from the elevator shaft and out the doors of the South Tower, consuming everything in its path. Minutes later, at 9:59 a.m., the tower collapsed.” [Jenkins and Edwards-Winslow, 9/2003, pp. 16] Around the same time, Port Authority Police Officer Will Jimeno is in a corridor leading toward the North Tower. “Suddenly the hallway began to shudder,” and he sees “the giant fireball explode in the street,” when the South Tower begins to collapse. [Bowhunter, 1/2003] Ronald DiFrancesco is the last person to make it out of the South Tower before it collapses. As he is heading toward the exit that leads onto Church Street, he hears a loud roar as the collapse begins. According to the Ottawa Citizen, “Mr. DiFrancesco turned to his right in the direction of Liberty Street, to see a massive fireball—compressed as the South Tower fell—roiling toward [him].” He bolts for the exit, before being knocked unconscious and blown many yards across the street. [USA Today, 12/18/2001; Ottawa Citizen, 6/4/2005; Ottawa Citizen, 6/5/2005; PBS NOVA, 9/5/2006] A number of other witnesses report feeling the ground shaking just seconds before the South Tower collapses (see Shortly Before 9:59 a.m. September 11, 2001).

Entity Tags: Will Jimeno, World Trade Center, Ronald DiFrancesco

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Numerous witnesses, including firefighters and other rescue workers, hear explosions at the start of, and during, the collapse of the south WTC tower. Some of them report hearing a single explosion:
bullet Jeff Birnbaum: “There was an explosion and the whole top leaned toward us and started coming down.” [Electrical Wholesaling, 2/1/2002]
bullet Battalion Chief John Sudnik: “[W]e heard a loud explosion or what sounded like a loud explosion and looked up and I saw Tower Two start coming down.” [City of New York, 11/7/2001]
bullet Firefighter Edward Kennedy hears “a tremendous boom, explosion… and the top of the building was coming down at us.” [City of New York, 1/17/2002]
bullet Firefighter Edward Sheehey hears “an explosion, looked up, and the building started to collapse.” [City of New York, 12/4/2001]
bullet Battalion Chief Thomas Vallebuona: “I heard ‘boom,’ an exploding sound, a real loud bang. I looked up, and I could see the Trade Center starting to come down.” [City of New York, 1/2/2002]
bullet EMT Julio Marrero: “I heard a loud bang. We looked up, and we just saw the building starting to collapse.” [City of New York, 10/25/2001]
Other witnesses report hearing multiple explosions:
bullet Journalist Pete Hamill: “We heard snapping sounds, pops, little explosions, and then the walls bulged out, and we heard a sound like an avalanche.” [New York Daily News, 9/11/2001]
bullet Police officer Sue Keane, who is an Army veteran, is located in the north WTC tower: “[I]t sounded like bombs going off. That’s when the explosions happened.… It started to get dark, then all of a sudden there was this massive explosion.” [Hagen and Carouba, 2002, pp. 65]
bullet Firefighter Keith Murphy, who is in the lobby of the North Tower: “[T]he first thing that happened, which I still think is strange to me, the lights went out.… I had heard right before the lights went out, I had heard a distant boom boom boom, sounded like three explosions.… At the time, I would have said they sounded like bombs, but it was boom boom boom and then the lights all go out.… I would say about 3, 4 seconds, all of a sudden this tremendous roar.” [City of New York, 12/5/2001]
bullet Firefighter Craig Carlsen hears “explosions coming from building two, the South Tower. It seemed like it took forever, but there were about ten explosions.… We then realized the building started to come down.” [City of New York, 1/25/2002]
bullet Firefighter Thomas Turilli, who is in the lobby of the North Tower: “[A]ll of a sudden you just heard like it almost actually that day sounded like bombs going off, like boom, boom, boom, like seven or eight, and then just a huge wind gust just came… It just seemed like a huge explosion.” [City of New York, 1/17/2002]
bullet Firefighter Stephen Viola: “[T]hat’s when the South Tower collapsed, and it sounded like a bunch of explosions. You heard like loud booms.” [City of New York, 1/10/2002]
bullet Firefighter Lance Lizzul: “[W]e heard some bangs. That made us look up, and that’s when the first Trade Center came down.” [City of New York, 12/10/2001]
bullet Paramedic Kevin Darnowski: “I heard three explosions, and then we heard like groaning and grinding, and Tower Two started to come down.” [City of New York, 11/9/2001]
However, the National Institute of Standards and Technology, which conducts a three-year study of the WTC collapses, will subsequently claim it found “no corroborating evidence for alternative hypotheses suggesting that the WTC towers were brought down by controlled demolition using explosives” (see October 26, 2005). [National Institute of Standards and Technology, 9/2005, pp. 146]

Entity Tags: Julio Marrero, Stephen Viola, John Sudnik, Craig Carlsen, Ed Kennedy, Keith Murphy, Kevin Darnowski, Pete Hamill, Edward Sheehey, World Trade Center, Lance Lizzul, Thomas Vallebuona, Sue Keane, Jeff Birnbaum, Thomas Turilli

Timeline Tags: 9/11 Timeline

Category Tags: Key Day of 9/11 Events, All Day of 9/11 Events, World Trade Center, WTC Investigation, 9/11 Investigations

The South Tower of the World Trade Center collapses.The South Tower of the World Trade Center collapses. [Source: Associated Press]The South Tower of the World Trade Center tilts to the southeast and then collapses. It was hit by Flight 175 at 9:03 a.m., 56 minutes earlier (see 9:03 a.m. September 11, 2001). [Washington Post, 9/12/2001; New York Times, 9/12/2001; MSNBC, 9/22/2001; USA Today, 12/20/2001; Associated Press, 8/21/2002; ABC News, 9/11/2002; National Institute of Standards and Technology, 9/2005, pp. 44] The first sign of the collapse is visible on floor 82. [National Institute of Standards and Technology, 9/2005, pp. 87] The angle of the tilt will be disputed after 9/11 (see September-November 2005), as will the time it takes the towers to fall to the ground (see September 12, 2001-September 2005). [Scientific American, 10/9/2001; Eagar and Musso, 12/2001; PBS Nova, 5/2002; National Institute of Standards and Technology, 8/30/2006]

Entity Tags: World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, Key Day of 9/11 Events, World Trade Center, 9/11 Investigations

Deputy Fire Commissioner Thomas Fitzpatrick.Deputy Fire Commissioner Thomas Fitzpatrick. [Source: City of New York]Numerous witnesses to the collapse of the south WTC tower think it resembles a demolition using explosives. Some initially believe this is what is occurring:
bullet Reporter John Bussey watches the collapse from the Wall Street Journal’s offices across the street from the WTC. He says, “I… looked up out of the office window to see what seemed like perfectly synchronized explosions coming from each floor, spewing glass and metal outward. One after the other, from top to bottom, with a fraction of a second between, the floors blew to pieces.” [Wall Street Journal, 9/12/2001]
bullet Deputy Fire Commissioner Thomas Fitzpatrick: “I remember seeing, it looked like sparkling around one specific layer of the building.… Then the building started to come down. My initial reaction was that this was exactly the way it looks when they show you those implosions on TV.” [City of New York, 10/1/2001]
bullet Assistant Fire Commissioner Stephen Gregory: “I saw low-level flashes. In my conversation with Lieutenant Evangelista… he questioned me and asked me if I saw low-level flashes in front of the building, and I agreed with him… I saw a flash flash flash and then it looked like the building came down.… You know like when they demolish a building, how when they blow up a building, when it falls down? That’s what I thought I saw.” [City of New York, 10/3/2001]
bullet Firefighter Richard Banaciski: “It seemed like on television they blow up these buildings. It seemed like it was going all the way around like a belt, all these explosions.” [City of New York, 12/6/2001]
bullet Firefighter Joseph Meola: “As we are looking up at the building, what I saw was, it looked like the building was blowing out on all four sides. We actually heard the pops.… You thought it was just blowing out.” [City of New York, 12/11/2001]
bullet Fire Chief Frank Cruthers: “[T]here was what appeared to be at first an explosion. It appeared at the very top, simultaneously from all four sides, materials shot out horizontally. And then there seemed to be a momentary delay before you could see the beginning of the collapse.” [City of New York, 10/31/2001]
bullet Battalion Chief Brian Dixon: “I was watching the fire… the lowest floor of fire in the South Tower actually looked like someone had planted explosives around it because the whole bottom I could see—I could see two sides of it and the other side—it just looked like that floor blew out.… I thought, geez, this looks like an explosion up there, it blew out.” [City of New York, 10/25/2001]
bullet Firefighter Timothy Burke: “Then the building popped, lower than the fire… I was going oh, my god, there is secondary device because the way the building popped I thought it was an explosion.” [City of New York, 1/22/2002]
bullet Firefighter Edward Cachia: “It actually gave at a lower floor, not the floor where the plane hit, because we originally had thought there was like an internal detonation explosives because it went in succession, boom, boom, boom, boom, and then the tower came down.” [City of New York, 12/6/2001]
bullet Firefighter Kenneth Rogers: “[T]here was an explosion in the South Tower… I kept watching. Floor after floor after floor. One floor under another after another and when it hit about the fifth floor, I figured it was a bomb, because it looked like a synchronized deliberate kind of thing.” [City of New York, 12/10/2001]
bullet Reporter Beth Fertig: “The tower went down perfectly straight, as if a demolition crew had imploded it. I wondered if it was being brought down deliberately.” [Gilbert et al., 2002, pp. 78]
bullet Paramedic Daniel Rivera: “[D]o you ever see professional demolition where they set the charges on certain floors and then you hear ‘Pop, pop, pop, pop, pop’? That’s exactly what—because I thought it was that.” [City of New York, 10/10/2001]
bullet Battalion Chief Dominick DeRubbio: “It was weird how it started to come down. It looked like it was a timed explosion.” [City of New York, 10/12/2001]
bullet The Guardian will report that police on the scene said the collapse “looked almost like a ‘planned implosion’ designed to catch bystanders watching from the street.” [Guardian, 9/12/2001]
However, the National Institute of Standards and Technology, which conducts a three-year study of the WTC collapses, will reject suggestions that the WTC towers were brought down with explosives (see August 30, 2006). CTV will assert, “[F]lashes of light that seemed to indicate bombs detonating were not explosions. They were pockets of airs being forced out of windows as the sagging floors pushed downward.” [CTV, 9/12/2006]

Entity Tags: Stephen Gregory, Edward Cachia, Dominick DeRubbio, Beth Fertig, Frank Cruthers, John Bussey, Richard Banaciski, Kenneth Rogers, World Trade Center, Joseph Meola, Timothy Burke, Brian Dixon, Daniel Rivera, Thomas Fitzpatrick

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center, WTC Investigation, 9/11 Investigations

Mayor Rudolph Giuliani will become well known for his walking press conferences in the middle of the 9/11 crisis.Mayor Rudolph Giuliani will become well known for his walking press conferences in the middle of the 9/11 crisis. [Source: Time Magazine/ Salient Stills]Between 9:25 a.m. and 9:45 a.m., one senior New York fire chief recommends to the Fire Department Chief of Department that there might be a WTC collapse in a few hours, and, therefore, fire units probably shouldn’t ascend much above the sixtieth floor (presumably this assumes the collapse would be gradual so those on lower floors would still have time to evacuate). This advice is not followed or not passed on. Apparently, no other senior fire chiefs mention or foresee the possibility of the WTC towers falling. [9/11 Commission, 5/19/2004] However, New York City Mayor Rudolph Giuliani later recounts, “I went down to the scene and we set up headquarters at 75 Barclay Street, which was right there, with the police commissioner, the fire commissioner, the head of emergency management, and we were operating out of there when we were told that the World Trade Center was going to collapse. And it did collapse before we could actually get out of the building, so we were trapped in the building for ten, 15 minutes, and finally found an exit and got out, walked north, and took a lot of people with us.” [ABC News, 9/11/2001] As can be seen by another account of similar events, this happens before the first WTC tower falls, not the second. [9/11 Commission, 5/19/2004] It is not clear who tells Giuliani to evacuate when no fire chiefs were considering the possibility of an imminent collapse. However, an EMT is also given a message around this time, warning that the towers are going to collapse. The origin of this information is apparently the Mayor’s Office of Emergency Management, so this may also have been from where Giuliani heard of the imminent collapse (see (Before 9:59 a.m.) September 11, 2001).

Entity Tags: World Trade Center, Rudolph (“Rudy”) Giuliani

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center, 9/11 Investigations, WTC Investigation

Ray Downey.Ray Downey. [Source: Unknown]When the WTC’s South Tower collapses, Father John Delendick—one of New York Fire Department’s chaplains—runs down a ramp to the garages below the nearby World Financial Center, to escape the dust cloud. He speaks there with Fire Chief Ray Downey, and asks him if the jet fuel from the plane had blown up, causing the collapse. [City of New York, 12/6/2001] Downey is in fact a renowned expert on building collapses. Robert Ingram, a battalion chief in the New York Fire Department later refers to him as “the premiere collapse expert in the country.” [US Congress. Senate. Committee on Commerce, 10/11/2001 pdf file] 9/11 Commissioner Timothy Roemer calls Downey a “very, very respected expert on building collapse.” [9/11 Commission, 5/18/2004] And Fire Chief Mike Antonucci, who is a best friend of Downey’s, says he “was probably the most knowledgeable person on building collapses there was. That was his [hobby], to study building collapses—what affected the engineering of buildings, how they [would] weaken and how he could respond and stay safe.” [Inland Valley Daily Bulletin, 9/7/2006] In response to Delendick’s question, Downey replies that, “at that point he thought there were bombs up there because [the collapse] was too even.” [City of New York, 12/6/2001] Earlier on, Downey told other fire chiefs responding at the WTC that he was worried about “explosive devices” in the Twin Towers “that could hurt the firemen” (see (9:20 a.m.) September 11, 2001). He is killed when the North Tower collapses at 10:28 a.m. [New York Times, 9/9/2005]

Entity Tags: Ray Downey, John Delendick

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

A security officer for one of the businesses in Building 7 of the World Trade Center (WTC 7) goes up WTC 7 and subsequently becomes trapped on its seventh floor. [National Institute of Standards and Technology, 9/2005, pp. 109-110; National Institute of Standards and Technology, 11/2008, pp. 298-299 pdf file] Although most people were evacuated from the building around the time the South Tower was hit, if not earlier (see (9:03 a.m.) September 11, 2001), after the South Tower collapses at 9:59 a.m. the security officer heads up to a floor in the 40s in WTC 7, reportedly to check that all his personnel have left. (The name of the company he works for is unstated.) He is initially accompanied by a police officer, but at around the 10th floor this officer has difficulty breathing, and so goes back down and exits the building. When the North Tower collapses at 10:28 a.m., WTC 7 shakes and the stairwell goes dark. The security officer, who has reached the 30th floor by this time, heads back down the stairs. When he reaches the 23rd floor, where the headquarters of New York’s Office of Emergency Management (OEM) is located, he opens the door to check for any members of staff that might still be there, but finds the area filled with smoke. (The OEM was evacuated at about 9:30 a.m., if not earlier (see (Soon After 8:46 a.m.-9:35 a.m.) September 11, 2001 and (9:30 a.m.) September 11, 2001).) He then continues down to the seventh floor, where he has to stop because he is unable to see or breathe. He is able to break a window, and calls for help. [National Institute of Standards and Technology, 11/2008, pp. 298-299 pdf file] At around 12:10 to 12:15 p.m., firefighters will enter the building and rescue the security officer, escorting him down the stairs and out of the building. They will also rescue two men who are trapped on the eighth floor (see 12:10 p.m.-12:15 p.m. September 11, 2001). [National Institute of Standards and Technology, 6/2004 pdf file; National Institute of Standards and Technology, 9/2005, pp. 110]

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Someone falling from the WTC. Well over 50 jumped or fell from the North Tower, none from the South Tower.Someone falling from the WTC. Well over 50 jumped or fell from the North Tower, none from the South Tower. [Source: Associated Press]At some point between the collapse of the two WTC towers, it is claimed that fire chiefs order the firefighters to come down. It has not been reported exactly who issued this order or when. Witnesses claim that scores of firefighters, unaware of the danger, were resting on lower floors in the minutes before the second tower collapsed. “Some firefighters who managed to get out said they had no idea the other building had already fallen, and said that they thought that few of those who perished knew.” At least 121 firefighters in the remaining tower die. The Fire Department blames a faulty radio repeater. However, the Port Authority claims later transcripts of radio communications show the repeaters worked. [New York Times, 11/9/2002]

Entity Tags: Port Authority of New York and New Jersey

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Damage to World Trade Center Building 7.
Damage to World Trade Center Building 7. [Source: New York City Police Department]World Trade Center Building 7 (WTC 7) appears to have suffered significant damage at some point after the Twin Towers collapsed, according to some firefighters at the scene. Firefighter Butch Brandies tells other firefighters that nobody is to go into Building 7 because of creaking and noises coming out of there. [Firehouse Magazine, 9/9/2002] According to Deputy Chief Peter Hayden, there is a bulge in the southwest corner of the building between floors 10 and 13. [Firehouse Magazine, 9/2/2002] Battalion Chief John Norman will later recall, “At the edge of the south face you could see that it was very heavily damaged.” [Firehouse Magazine, 9/2/2002] Deputy Chief Nick Visconti also later recalls, “A big chunk of the lower floors had been taken out on the Vesey Street side.” [Firehouse Magazine, 9/9/2002] Captain Chris Boyle will recall, “On the south side of 7 there had to be a hole 20 stories tall in the building, with fire on several floors.” [Firehouse Magazine, 9/9/2002] The building will collapse hours later (see (5:20 p.m.) September 11, 2001).

Entity Tags: John Norman, Chris Boyle, Nick Visconti, World Trade Center, Butch Brandies, Peter Hayden

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

A helicopter flying above the burning World Trade Center.A helicopter flying above the burning World Trade Center. [Source: History Channel]Minutes after the collapse of the south WTC tower, police helicopters fly near the North Tower to check on its condition. The pilot of one helicopter radios, “About 15 floors down from the top, it looks like its glowing red,” and adds, “It’s inevitable.” Seconds later, another helicopter pilot reports, “I don’t think this has too much longer to go. I would evacuate all people within the area of that second building.” While these warnings are relayed to police officers, fire and rescue personnel do not hear them, as they operate on a different radio system. [New York Times, 7/7/2002; Inter Press Service, 8/25/2005; National Institute of Standards and Technology, 9/2005, pp. 224] The North Tower will collapse 21 minutes later (see 10:28 a.m. September 11, 2001).

Entity Tags: World Trade Center, New York City Police Department

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

The exterior wall on the south side of the World Trade Center’s North Tower apparently bows before the building collapses. The first inquiry into the collapse, by the Federal Emergency Management Agency and the American Society of Civil Engineers, states that the perimeter walls bow outward (see (9:21 a.m.-9:59 a.m. September 11, 2001)). However, a subsequent report by the National Institute of Standards and Technology states that the south wall of the North Tower bows inward. In places the wall is said to bow inward by approximately 55 inches at floor 97, and NIST interprets this bowing to mean that the floors must be sagging. NIST will find that the sagging and bowing are two of the seven major factors that led to the collapse of each tower, as the bowing walls are no longer able to support their share of the buildings’ weight, causing the buildings to tilt and the upper sections to fall. [National Institute of Standards and Technology, 9/2005, pp. 32-34, 87]

Entity Tags: World Trade Center, National Institute of Standards and Technology, Federal Emergency Management Agency

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

Some witnesses feel the ground shaking just before the north WTC tower starts collapsing:
bullet Fire Patrolman Paul Curran is in front of the US Customs House (WTC 6), next to the North Tower. He says, “all of a sudden the ground just started shaking. It felt like a train was running under my feet.… The next thing we know, we look up and the tower is collapsing.” [City of New York, 12/18/2001]
bullet EMS Lieutenant Bradley Mann is heading toward the EMS staging area on Vesey Street. He’d felt the ground shaking prior to the first collapse (see Shortly Before 9:59 a.m. September 11, 2001). He says, “The ground shook again, and we heard another terrible noise and the next thing we knew the second tower was coming down.” [City of New York, 11/7/2001]
bullet Jay Jonas is actually inside the North Tower, on its fourth floor. Seconds before the collapse he feels “a tremendous vibration and shaking; the floor began waving.” [Providence Journal, 9/11/2002]

Entity Tags: Jay Jonas, Bradley Mann, Paul Curran

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

Almost all the occupants of the North Tower who are able to evacuate the building have done so. Only 107 occupants who were below the impact floors remain in the building, while around 7,400 have escaped. However, 1,355 building occupants in or above the impact zone have either already died or perish in the collapse, as do many emergency workers. Overall, 99 percent of building occupants below the impact floors escape to safety. [National Institute of Standards and Technology, 9/2005, pp. xxxviii, 32] Most workers in the South Tower also left the building before it collapsed (see 9:58 a.m. September 11, 2001).

Entity Tags: World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

World Trade Center Building 7 (WTC 7) suffers fires on several floors, some of which last until 5:20 p.m., when the building collapses. [National Institute of Standards and Technology, 8/21/2008] WTC 7 is a 47-story office building located just north of the Twin Towers. It is damaged when the north WTC tower (WTC 1) collapses at 10:28 a.m. (see 10:28 a.m. September 11, 2001). [National Institute of Standards and Technology, 11/2008, pp. 2, 16 pdf file]
Fires Started by Collapse Debris - Two official reports on the collapse of WTC 7 will tentatively conclude that fires in this building are initiated by debris that is ejected when the North Tower collapses (see 10:28 a.m. September 11, 2001). In a 2002 report (see May 1, 2002), the Federal Emergency Management Agency (FEMA) will state, “It is likely that fires” in WTC 7 “started as a result of debris from the collapse of WTC 1.” [Federal Emergency Management Agency, 5/1/2002, pp. 5-20] In a 2008 report (see November 20, 2008), the National Institute of Standards and Technology (NIST) will state, “Most likely, the WTC 7 fires began as a result of burning debris from the collapse of WTC 1.” However, NIST will add, “visual evidence of fires in the building was not available until around noon.” [National Institute of Standards and Technology, 11/2008, pp. 18 pdf file]
Fires Spread in WTC 7 - According to NIST, fires are ignited “on at least 10 floors” of WTC 7, but “only the fires on floors 7 through 9 and 11 through 13 grew and lasted until the time of the building collapse.” [National Institute of Standards and Technology, 11/2008, pp. xxxvi pdf file] NIST will state, “Early fires were seen on the southwest corner of floors 19, 22, 29, and 30 shortly after noon,” but “These were short-lived.” [National Institute of Standards and Technology, 11/2008, pp. 51 pdf file] The fires on floors 7 to 9 and 11 to 13, however, “grew and spread, since they were not extinguished either by the automatic sprinkler system or by [the New York City Fire Department], because water was not available in WTC 7.” Fires are “generally concentrated on the east and north sides of the northeast region beginning at about 3 p.m. to 4 p.m.” [National Institute of Standards and Technology, 11/2008, pp. 21 pdf file] The fires on floors 7 to 9 and 11 to 13 have “characteristics similar to those that have occurred previously in tall buildings,” according to NIST, and “Their growth and spread [are] consistent with ordinary building contents fires.” [National Institute of Standards and Technology, 11/2008, pp. xxxvi pdf file] These fires are “fed by combustibles (e.g., desks, chairs, papers, carpet) that were ordinary for commercial occupancies.” However, NIST will point out, there is “no evidence that the fires spread from floor to floor, except, perhaps, just prior to the collapse of the building.” [National Institute of Standards and Technology, 11/2008, pp. 51-52 pdf file]
Limited Evidence Available - Both FEMA and NIST will admit that their accounts of the fires in WTC 7 are based upon imperfect evidence. In its report on the WTC collapses, published in May 2002, FEMA will note, “Currently, there is limited information about the ignition and development of fires at WTC 7.” [Federal Emergency Management Agency, 5/1/2002, pp. 5-20] In the final report of its investigation of the collapse of WTC 7, NIST will point out that “available images showing fires in WTC 7 did not allow the detailed description of fire spread that was possible for the WTC towers.” The report will add: “It must be kept in mind that [NIST’s] fire observations were based on images of the exterior faces, which provided little indication about the behavior of fires well removed from the exterior walls. It is likely that much of the burning took place beyond the views of the windows.” But, the report will state, “[T]here was sufficient information to derive general descriptions of fire ignition and spread on various floors of the building.” [National Institute of Standards and Technology, 11/2008, pp. 18 pdf file]
NIST Blames Fires for Collapse - WTC 7 collapses at 5:20 p.m. this afternoon (see (5:20 p.m.) September 11, 2001). In late 2008, at the end of its investigation into WTC 7’s collapse, NIST will blame the fires WTC 7 suffers for causing its collapse (see August 21, 2008 and August 21, 2008). NIST will state: “The heat from the uncontrolled fires caused steel floor beams and girders to thermally expand, leading to a chain of events that caused a key structural column to fail. The failure of this structural column then initiated a fire-induced progressive collapse of the entire building.” [National Institute of Standards and Technology, 8/21/2008; National Institute of Standards and Technology, 11/2008, pp. xxxvi-xxxvii pdf file] However, critics will dispute this conclusion, instead blaming explosives for the collapse (see August 21, 2008). [New York Times, 8/21/2008] FEMA will offer no firm conclusions about the possible role fires play in causing WTC 7 to collapse. In its 2002 report it will state, “The specifics of the fires in WTC 7 and how they caused the building to collapse remain unknown at this time.” [Federal Emergency Management Agency, 5/1/2002, pp. 5-31]

Entity Tags: World Trade Center, National Institute of Standards and Technology, Federal Emergency Management Agency

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Fire Lieutenant Gregg HanssonFire Lieutenant Gregg Hansson [Source: BBC]Many witnesses hear explosions during the collapse of the north WTC tower. Some report hearing a single explosion:
bullet Reporter Mike Sheehan hears “another deafening explosion. I looked up and saw the top of the North Tower, the mast, begin to fall.” [Gilbert et al., 2002, pp. 126]
bullet Fire Lieutenant William Wall: “[W]e heard an explosion. We looked up and the building was coming down right on top of us.” [City of New York, 12/10/2001]
bullet Firefighter Roy Chelsen: “All of a sudden we heard this huge explosion, and that’s when the tower started coming down.” [City of New York, 1/18/2002]
bullet EMT Jason Charles: “I heard a ground level explosion and I’m like holy shit, and then you heard that twisting metal wreckage again.” [City of New York, 1/23/2002]
bullet Firefighter Kevin Murray: “When the tower started—there was a big explosion that I heard and someone screamed that it was coming down.” [City of New York, 10/9/2001]
bullet Firefighter James Ippolito: “I heard an explosion and turned around and the building was coming down.” [City of New York, 12/13/2001]
bullet Fire Lieutenant Gregg Hansson: “[A] large explosion took place. In my estimation that was the tower coming down, but at that time I did not know what that was. I thought some type of bomb had gone off.” [City of New York, 10/9/2001]
bullet Firefighter Kevin Gorman: “I heard the explosion, looked up, and saw like three floors explode, saw the antenna coming down.” [City of New York, 1/9/2002]
Others report hearing multiple explosions:
bullet EMT Gregg Brady: “I heard 3 loud explosions. I look up and the North Tower is coming down now.” [City of New York, 11/1/2001]
bullet Firefighter Richard Carletti: “I remember seeing the antenna do a little rock back and forth and I could just hear the floors pancaking. I heard it for about 30 pancakes, just boom, boom, boom, boom.” [City of New York, 1/2/2002]
bullet Fire Lieutenant Michael Cahill: “That’s when the second collapse started to come down. All kinds of noise. Boom, boom, boom, boom, boom, very loud.” [City of New York, 10/17/2001]
bullet Firefighter Sal D’Agostino is actually inside the North Tower, around its fourth floor, when the collapse occurs. He says, “It’s pancaking from the top down, and there were these huge explosions—I mean huge, gigantic explosions.” [Providence Journal, 9/11/2002; Dwyer and Flynn, 2005, pp. 241-242]
bullet Firefighter Bill Butler, who is with D’Agostino inside the tower, says, “It was like a train going two inches away from your head: bang-bang, bang-bang, bang-bang.” [Providence Journal, 9/11/2002]
bullet EMT David Timothy: “[Y]ou started hearing more explosions. I guess this is when the second tower started coming down.” [City of New York, 10/25/2001]
CTV will later assert, “When eyewitnesses claim to have heard explosions prior to the collapse, those were just the sounds of a massive building contorting and crushing anything inside.” [CTV, 9/12/2006]

Entity Tags: Jason Charles, Roy Chelsen, James Ippolito, Bill Butler, David Timothy, Kevin Gorman, Kevin Murray, Mike Sheehan, Gregg Brady, World Trade Center, Michael Cahill, William Wall, Richard Carletti, Gregg Hansson, Sal D’Agostino

Timeline Tags: 9/11 Timeline

Category Tags: Key Day of 9/11 Events, All Day of 9/11 Events, World Trade Center, WTC Investigation, 9/11 Investigations

The North Tower collapses in a matter of seconds.The North Tower collapses in a matter of seconds. [Source: Ray Stubblebine/ Reuters/ Landov] (click image to enlarge)The North Tower of the World Trade Center tilts to the south and then collapses. Its north side was hit by Flight 11 at 8:46, 102 minutes earlier. [CNN, 9/12/2001; New York Times, 9/12/2001; MSNBC, 9/22/2001; Kim and Baum, 2002 pdf file; Associated Press, 8/21/2002; National Institute of Standards and Technology, 9/2005, pp. 33] After the antenna starts to move (see (10:28 a.m. September 11, 2001)), the next sign that the top section of the building is moving downward is on floor 98, at the top of the impact zone. [National Institute of Standards and Technology, 9/2005, pp. 22, 87] The angle of the tilt will be disputed after 9/11 (see September-November 2005), as will the time it takes the towers to fall to the ground (see September 12, 2001-September 2005). [Scientific American, 10/9/2001; Eagar and Musso, 12/2001; PBS Nova, 5/2002; National Institute of Standards and Technology, 8/30/2006] The death toll could have been much worse—an estimated 15,000 people made it out of the WTC to safety after 8:46 a.m. [St. Petersburg Times, 9/8/2002]

Entity Tags: World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, Key Day of 9/11 Events, World Trade Center, 9/11 Investigations

Some witnesses to the collapse of the North Tower think it resembles a demolition using explosives:
bullet Fire Captain Dennis Tardio: “I hear an explosion and I look up. It is as if the building is being imploded, from the top floor down, one after another, boom, boom, boom.” [Smith, 2002, pp. 18]
bullet Assistant Fire Commissioner James Drury: “[P]eople in the street and myself included thought that the roar was so loud that the explosive—bombs were going off inside the building.” [City of New York, 10/16/2001]
bullet Firefighter James Curran: “I heard like every floor went chu-chu-chu. Looked back and from the pressure everything was getting blown out of the floors before it actually collapsed.” [City of New York, 12/30/2001]
bullet EMS Captain Karin Deshore: “Somewhere around the middle of the World Trade Center, there was this orange and red flash coming out. Initially it was just one flash. Then this flash just kept popping all the way around the building and that building had started to explode. The popping sound, and with each popping sound it was initially an orange and then a red flash came out of the building and then it would just go all around the building on both sides as far as I could see. These popping sounds and the explosions were getting bigger, going both up and down and then all around the building. I went inside… and I said I think we have another major explosion.” [City of New York, 11/7/2001]
The National Institute of Standards and Technology, in its report on the towers’ collapse, will reject suggestions that the Twin Towers were brought down with explosives (see August 30, 2006). [National Institute of Standards and Technology, 8/30/2006]

Entity Tags: Karin Deshore, James Drury, World Trade Center, Dennis Tardio, James Curran

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center, WTC Investigation, 9/11 Investigations

Carol Marin.Carol Marin. [Source: Columbia Journalism Review]CBS News correspondent Carol Marin witnesses what she describes as a “gigantic fireball” coming from the base of the North Tower as it starts to collapse. [USA Today, 9/11/2001; Chicago Sun-Times, 9/12/2001; Daily Herald (Arlington Heights), 9/11/2002] Marin headed to the scene of the attacks and arrived on West Street after the South Tower collapsed. She then sees the second tower come down, later describing, “I was only a block or two away from the North Tower when the street trembled under my feet, a fireball of pooled jet fuel exploded out of the building’s base, and it too, unbelievably, started to collapse right in front of me.” [Chicago Sun-Times, 9/10/2006] (However, the explosion could not be due to “pooled jet fuel,” as, according to the National Institute of Standards and Technology, “The jet fuel” from the planes “was mostly consumed within the first few minutes after impact.” [National Institute of Standards and Technology, 6/18/2004; New York Times, 4/5/2005] ) In one telling, Marin describes, “a roar seemed to come out of the earth,” causing the fireball. [Gilbert et al., 2002] In another, she says, “there was a roar, an explosion, and we could see coming toward us a ball of flame, stories high.” She runs, and a firefighter throws her against a building to protect her. She recalls, “The flame somehow stopped short of us.” [CBS News, 2002, pp. 54] Other witnesses also describe the ground shaking before the North Tower collapse (see Shortly Before 10:28 a.m. September 11, 2001). And some witnesses similarly report seeing a fireball at ground level coming from the South Tower when it collapsed (see Shortly Before 9:59 a.m. September 11, 2001).

Entity Tags: Carol Marin

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Damage to the southwest corner of WTC 7.Damage to the southwest corner of WTC 7. [Source: Arquelio Galarza]World Trade Center Building 7 (WTC 7) suffers some damage, caused by debris from the collapse of the north WTC tower, according to later official reports. [Federal Emergency Management Agency, 5/1/2002, pp. 5-16; National Institute of Standards and Technology, 11/2008, pp. 16 pdf file]
WTC 7 Undamaged by South Tower Collapse - WTC 7 is a 47-story office building located 370 feet north of the North Tower (WTC 1). In the final report of its investigation into WTC 7’s collapse, published in November 2008 (see November 20, 2008), the National Institute of Standards and Technology (NIST) will state that although a few windows on the lower floors of WTC 7’s south face were broken when the South Tower (WTC 2) collapsed at 9:59 a.m. (see 9:59 a.m. September 11, 2001), “None of the large pieces of debris from WTC 2 hit WTC 7, because of the large distance between the two buildings,” and there is “no evidence of structural damage to WTC 7” as a result of the South Tower’s collapse.
Debris Reportedly Damages Exterior Columns - However, when the North Tower collapses (see 10:28 a.m. September 11, 2001), some fragments of debris are “forcibly ejected” from it, and travel “distances up to hundreds of meters.” According to NIST, pieces of this debris “hit WTC 7, severing six columns on floors 7 through 17 on the south face and one column on the west face near the southwest corner.” NIST will add that the debris also causes “structural damage between floor 44 and the roof,” and breaks a large number of windows on WTC 7’s south face.
Building Core Undamaged - However, NIST will state, based on “photographic evidence, witness accounts, and engineering judgment, it is likely that the structural damage (steel and floor slabs) did not penetrate beyond the perimeter of the building core. At the southwest corner, the structural damage extended only about one-third of the distance from the exterior wall to the building core.” NIST will comment, “Compared to the airplane impact damage to the WTC towers, there was relatively little damage to the interior of WTC 7.” There is also “no superficial or structural damage” to WTC 7’s north and east faces. And the sprayed fire resistive material that has been applied to the building’s steel columns, girders, and beams is only damaged in the “immediate vicinity of the WTC 1 debris impact.” NIST will admit, however, that there are “uncertainties” in its accounting of the events leading up to the collapse of WTC 7, because “the remains of all the WTC buildings were disposed of before Congressional action and funding was available for [its] investigation [of the WTC collapses] to begin” (see Shortly After September 11, 2001 and September 12-October 2001). [National Institute of Standards and Technology, 8/21/2008; National Institute of Standards and Technology, 11/2008, pp. 15-16 pdf file]
FEMA Describes WTC 7 Damage - According to an earlier report on the collapse of WTC 7, published by the Federal Emergency Management Agency (FEMA) in May 2002 (see May 1, 2002), at that time, the “extent and severity of the resulting damage to WTC 7” when the North Tower collapses “are currently unknown.” But based on “photographic evidence and eyewitness accounts,” it is “assumed that the south side of the building was damaged to some degree.” FEMA’s report will state: “It does not appear that the collapse of WTC 1 affected the roof, or the east, west, and north elevations of WTC 7 in any significant way. However, there was damage to the southwest corner of WTC 7 at approximately floors 8 to 20, 24, 25, and 39 to 46.” The report will add: “According to firefighters’ eyewitness accounts from outside of the building, approximately floors 8-18 were damaged to some degree. Other eyewitness accounts relate that there was additional damage to the south elevation.” [Federal Emergency Management Agency, 5/1/2002, pp. 5-16, 5-20]
Structural Damage Not Responsible for Collapse - WTC 7 will collapse at 5:20 p.m. this afternoon (see (5:20 p.m.) September 11, 2001). [National Institute of Standards and Technology, 8/21/2008] However, NIST will conclude that the structural damage the building suffers plays no role in causing it to come down. NIST will state, “Other than initiating the fires in WTC 7, the damage from the debris from WTC 1 had little effect on initiating the collapse of WTC 7.” [National Institute of Standards and Technology, 11/2008, pp. xxxvii pdf file] WTC 7 suffers fires on some floors, which are reportedly initiated by debris from the collapse of the North Tower (see (10:28 a.m.-5:20 p.m.) September 11, 2001). According to NIST, it is these fires, “rather than the structural damage that resulted from the impacts” of debris, which “initiated the building’s collapse.” [National Institute of Standards and Technology, 8/21/2008]

Entity Tags: World Trade Center, National Institute of Standards and Technology, Federal Emergency Management Agency

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

The team studying the WTC collapses for the American Society of Civil Engineers (ASCE) and the Federal Emergency Management Agency (FEMA) will later observe that the antenna on WTC 1 began to fall before the exterior of the building: “Review of videotape recordings of the collapse taken from various angles indicates that the transmission tower on top of the structure began to move downward and laterally slightly before movement was evident at the exterior wall. This suggests that collapse began with one or more failures in the central core area of the building.” [Federal Emergency Management Agency, 5/1/2002, pp. 2-27] In a program featuring some members of the FEMA/ASCE team, the BBC will comment: “The mast was directly supported by the tower’s inner core. The way it fell suggests it was failure of the inner core that began the collapse, whereas in the South Tower it had been the outer walls.” [BBC, 3/7/2002]

Entity Tags: American Society of Civil Engineers, World Trade Center, Federal Emergency Management Agency

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

According to Captain Michael Currid, the sergeant at arms for the Uniformed Fire Officers Association, some time after the collapse of the North Tower, he sees four or five fire companies trying to extinguish fires in Building 7 of the WTC. Someone from the city’s Office of Emergency Management tells him that WTC 7 is in serious danger of collapse. Currid says, “The consensus was that it was basically a lost cause and we should not lose anyone else trying to save it.” Along with some others, he goes inside WTC 7 and yells up the stairwells to the fire fighters, “Drop everything and get out!” [Murphy, 2002, pp. 175-176] However, other accounts contradict this, claiming that no attempt is made to fight the fires in WTC 7 (see (11:30 a.m.) September 11, 2001). One report later claims, “Given the limited water supply and the first strategic priority, which was to search for survivors in the rubble, FDNY did not fight the fires [in WTC 7].” [Fire Engineering, 9/2002] And a 2002 government report says, “the firefighters made the decision fairly early on not to attempt to fight the fires, due in part to the damage to WTC 7 from the collapsing towers.” [Federal Emergency Management Agency, 5/1/2002, pp. 5-21] Building 7 eventually collapses late in the afternoon of 9/11 (see (5:20 p.m.) September 11, 2001).

Entity Tags: World Trade Center, Office of Emergency Management, Michael Currid

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center

The seismic record at Palisades, NY, 34 km north of the World Trade Center.The seismic record at Palisades, NY, 34 km north of the World Trade Center. [Source: Lamont-Doherty Earth Observatory] (click image to enlarge)According to a seismographical study conducted by Columbia University’s Lamont-Doherty Earth Observatory in Palisades, New York, five distinct shocks occur at the World Trade Center site. They occur at 11:01 a.m., 11:15 a.m., 11:29 a.m., 12:07 p.m., and 12:10 p.m. According to the study, the five resulting seismic signals “may have been generated by additional collapses.” [Earth Institute at Columbia University, 11/16/2001; Kim et al., 11/20/2001 pdf file]

Entity Tags: Lamont-Doherty Earth Observatory

Category Tags: All Day of 9/11 Events, World Trade Center, WTC Investigation, 9/11 Investigations

Allan Dodds Frank.Allan Dodds Frank. [Source: CNN]A CNN correspondent incorrectly suggests that a third skyscraper may have recently collapsed in New York. Reporting from Lower Manhattan, Allan Dodds Frank describes: “[J]ust two or three minutes ago there was yet another collapse or explosion. I’m now out of sight, a Good Samaritan has taken me in on Duane Street. But at a quarter to 11, there was another collapse or explosion following the 10:30 collapse of the second tower. And a firefighter who rushed by us estimated that 50 stories went down. The street filled with smoke. It was like a forest fire roaring down a canyon.” [CNN, 9/11/2001] A third tower—the 47-story World Trade Center Building 7—does collapse on this day. It will not come down, however, until 5:20 in the afternoon (see (5:20 p.m.) September 11, 2001). [Washington Post, 9/12/2001; New York Times, 11/29/2001]

Entity Tags: Allan Dodds Frank

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

The New York Fire Department (FDNY) assigns a chief officer to take charge of operations at WTC Building 7. The chief is initially ordered to put out the fires there. It is determined around this time that there are fires on floors 6-8, 17, 21 and 30. However, there are problems with the water supply: There is no water coming out of the hydrant system nearby, and an FDNY chief officer who has been in WTC 7 says he opened a standpipe on the 4th floor of one stairway, but found no water in the standpipe system. This should not be a problem though, as two or three FDNY fireboats have been tied up on the Hudson shore, specifically to provide water to the site, and lines are already being stretched up to the WTC area. However, as the National Institute of Standards and Technology (NIST) will later report, “According to the FDNY first-person interviews, water was never an issue at WTC 7 since firefighting was never started in the building. When the Chief Officer in charge of WTC 7 got to Barclay Street and West Broadway, numerous firefighters and officers were coming out of WTC 7. These firefighters indicated that several blocks needed to be cleared around WTC 7 because they thought that the building was going to collapse.” [Firehouse (.com), 9/17/2001; Time Out New York, 9/27/2001; National Institute of Standards and Technology, 9/2005, pp. 110-111] However, one fire captain later claims to have seen numerous firefighters trying to extinguish fires in WTC 7 at some unspecified time after the North Tower collapsed, until they were instructed to stop doing so (see After 10:28 a.m. September 11, 2001).

Entity Tags: New York City Fire Department

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

An engineer at the World Trade Center site correctly predicts that WTC Building 7 is going to collapse. Deputy Chief Peter Hayden of the New York Fire Department will later recall: “We had our special operations people set up surveying instruments to monitor, and see if there was any movement of, [WTC 7]. We were concerned of the possibility of collapse of the building. And we had a discussion with one particular engineer there, and we asked him, if we allowed it to burn could we anticipate a collapse, and if so, how soon?” The engineer apparently predicts correctly that WTC 7 will collapse and also the time it will take before it comes down. As Hayden will continue: “And it turned out that he was pretty much right on the money, that he said, ‘In its current state, you have about five hours.’” Hayden will not reveal the name of this engineer. [BBC, 7/6/2008] WTC 7 will collapse at about 5:20 p.m. (see (5:20 p.m.) September 11, 2001), indicating that the engineer makes his prediction around midday or shortly after. [CNN, 9/12/2001]

Entity Tags: Peter Hayden

Category Tags: All Day of 9/11 Events, World Trade Center

Jeffrey Scott Shapiro.Jeffrey Scott Shapiro. [Source: University of Florida]Larry Silverstein, who recently took over the lease of the World Trade Center complex (see July 24, 2001), discusses possibly bringing down WTC Building 7 in a controlled demolition in a telephone conversation with his insurance carrier, according to a reporter who is at the WTC site this afternoon. [Fox News, 4/22/2010] WTC 7 is a 47-story office building located just north of the Twin Towers. The National Institute of Standards and Technology (NIST) will say it suffered some structural damage (see 10:28 a.m. September 11, 2001) when the North Tower collapsed (see 10:28 a.m. September 11, 2001) and it has fires on several floors (see (10:28 a.m.-5:20 p.m.) September 11, 2001). It will collapse at 5:20 p.m., apparently becoming the first tall building ever to come down primarily as a result of fire (see (5:20 p.m.) September 11, 2001). [National Institute of Standards and Technology, 11/2008, pp. xxxv-xxxvi pdf file]
Silverstein Allegedly Wants WTC 7 Demolished - Investigative reporter Jeffrey Scott Shapiro, who is at the scene of the attacks in New York, will later recall: “Shortly before [WTC 7] collapsed, several NYPD officers and Con Edison workers told me that Larry Silverstein… was on the phone with his insurance carrier to see if they would authorize the controlled demolition of the building, since its foundation was already unstable and expected to fall. A controlled demolition would have minimized the damage caused by the building’s imminent collapse and potentially save lives.” Shapiro will add: “Many law enforcement personnel, firefighters, and other journalists were aware of this possible option. There was no secret.” [Fox News, 4/22/2010] Preparing a large building for demolition usually takes weeks, or even months. This time is spent on operations such as wrapping concrete columns to ensure pieces do not fly off. [Baltimore Sun, 2/26/1995; PBS NOVA, 12/1996; Construction Equipment Guide, 2/24/2005]
Discussion of Demolition Later Denied - Silverstein will later recall discussing WTC 7 over the phone with the commander of the New York Fire Department, and telling him, “We’ve had such terrible loss of life, maybe the smartest thing to do is pull it” (see After 12:00 Noon September 11, 2001), but a spokesman will subsequently claim that Silverstein was referring to withdrawing firefighters from the building, not bringing WTC 7 down with explosives. [US Department of State, 9/16/2005; BBC, 7/4/2008] At the end of a three-year investigation into the building’s collapse, NIST will say WTC 7 “did not collapse from explosives,” but critics will dispute this conclusion (see August 21, 2008). [Associated Press, 8/21/2008; New York Times, 8/21/2008]

Entity Tags: Jeffrey Scott Shapiro, New York City Police Department, Con Edison, World Trade Center, Larry Silverstein

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

At some point during the afternoon of 9/11, WTC leaseholder Larry Silverstein receives a phone call from the Fire Department commander, where they discuss the state of Building 7 of the WTC complex. Silverstein will discuss this call in a PBS documentary broadcast in 2002, saying that he told the commander, “You know, we’ve had such terrible loss of life, maybe the smartest thing to do is pull it. And they made that decision to pull and then we watched the building collapse.” [PBS, 9/10/2002] Some people suggest that by “pull it” Silverstein meant the deliberate demolition of the building. But a spokesman for Silverstein states that he was expressing “his view that the most important thing was to protect the safety of those firefighters, including, if necessary, to have them withdraw from the building.” [US Department of State, 9/16/2005] Yet this claim is contradicted by some accounts, according to which firefighters decided early on not to attempt fighting the fires in WTC 7 (see After 10:28 a.m. September 11, 2001)(see (11:30 a.m.) September 11, 2001). According to Haaretz, “In the afternoon of September 11, the Fire Department informed him that the smaller 7 World Trade Center building, which he owned, was going to collapse.” [Ha'aretz, 11/21/2001] Building 7 eventually collapses at around 5:20 in the afternoon (see (5:20 p.m.) September 11, 2001).

Entity Tags: Larry Silverstein

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center, WTC Investigation, 9/11 Investigations

Barry Jennings, a City Housing Authority worker who had become trapped in World Trade Center Building 7, finds the building’s lobby in ruins as he is being rescued from it, and steps over what feels to him like dead bodies. [Dylan Avery, 2007] After the first plane hit the WTC, Jennings had gone up to the emergency command center on the 23rd floor of WTC 7 along with Michael Hess, New York’s corporation counsel (see (Shortly Before 9:03 a.m.) September 11, 2001). [Associated Press, 9/11/2001; Dylan Avery, 2007] After heading down the stairs, the two men became trapped on the building’s eighth floor (see (Between 9:15 a.m. and 12:00 p.m.) September 11, 2001). Some time later, firefighters come into WTC 7 to help the two men out of the building. [UPN 9, 9/11/2001; National Institute of Standards and Technology, 9/2005, pp. 109-110]
Lobby Is 'Total Ruins' - According to Jennings, when he gets down to the lobby, he is astonished to find it totally ruined. In a 2007 interview he will recall: “[W]hen I came in there, the lobby had nice escalators. It was a huge lobby.” But reaching it again, he asks the firefighter who is escorting him, “Where are we?” and the firefighter answers, “This was the lobby.” Jennings finds this “unbelievable,” and says, “You gotta be kidding me.” He will describe the lobby as being “total ruins.”
'Stepping over People' - Furthermore, Jennings steps over what may be dead bodies in the lobby. He will say: “[T]he firefighter that took us down kept saying, ‘Do not look down,’ and I kept saying, ‘Why is that?’ [He said,] ‘Do not look down.’ And, stepping over people. And you know you could feel when you’re stepping over people.” [Dylan Avery, 2007] Yet most people were evacuated from WTC 7 around 9:03 a.m., if not earlier (see (9:03 a.m.) September 11, 2001). [National Institute of Standards and Technology, 9/2005, pp. 109] The very latest that people left the building, according to official accounts, was 9:30 a.m. (see (9:30 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 305] In a later interview, Jennings will clarify: “I never saw dead bodies.… [I]t felt like I was stepping over them but I never saw them.” The BBC will say, “There is no evidence that anyone died in Tower 7 on 9/11.” [BBC, 7/4/2008; BBC, 7/6/2008] According to the National Institute of Standards and Technology (NIST), firefighters lead Jennings and Hess out of WTC 7 at around 12:10 p.m. to 12:15 p.m. (see 12:10 p.m.-12:15 p.m. September 11, 2001). [National Institute of Standards and Technology, 6/2004, pp. L-18 pdf file]

Entity Tags: Michael Hess, Barry Jennings

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Michael Hess.Michael Hess. [Source: Harvard Law Bulletin]While most of Building 7 of the World Trade Center was evacuated around the time the South Tower was hit, if not earlier (see (9:03 a.m.) September 11, 2001), firefighters now find three individuals who have become trapped inside it, and lead them out of the building. [National Institute of Standards and Technology, 6/2004, pp. L-18 pdf file; National Institute of Standards and Technology, 9/2005, pp. 109-110] Among these individuals are Barry Jennings, a City Housing Authority worker, and Michael Hess, New York’s chief lawyer who is also a longtime friend of Mayor Rudolph Giuliani. The two had gone up to the 23rd floor emergency command center of the Mayor’s Office of Emergency Management after the first attack occurred, but found it empty (see (Shortly Before 9:03 a.m.) September 11, 2001). [New York Times, 11/21/1997; Associated Press, 9/11/2001; Giuliani, 2002, pp. 20-21 and 244; Dylan Avery, 2007] They then headed downstairs but became trapped around the eighth floor by smoke and debris that filled the staircase. After breaking a window and calling for help, they were spotted by firefighters outside. When the firefighters go in, they also find a security officer for one of the businesses based in the building, who is trapped on the seventh floor by the smoke in the stairway. This officer headed up the building after the South Tower collapsed at 9:59, to check that all his personnel had left there (see (Shortly After 9:59 a.m.-12:10 p.m.) September 11, 2001). All three men are escorted out of the building. [Penn State Public Broadcasting, 3/1/2002; National Institute of Standards and Technology, 6/2004, pp. L-18 pdf file; National Institute of Standards and Technology, 9/2005, pp. 110; National Institute of Standards and Technology, 11/2008, pp. 298-299 pdf file]

Entity Tags: Barry Jennings, Michael Hess

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

The chief fire officer who has been assigned to take charge of operations at WTC Building 7 meets with his command officer, to discuss the condition of this building and the fire department’s capabilities for controlling the fires in it. A deputy fire chief who has just been in WTC 7, inspecting up to its 7th or 8th floor, reports that there was a lot of fire inside and the stairway was filling with smoke. The fire chiefs discuss the situation and identify the following conditions:
bullet WTC 7 has suffered damage caused by falling debris from the Twin Towers, and they are uncertain about its structural stability.
bullet There are large fires on at least six floors.
bullet They do not have enough equipment available for conducting operations in the building, such as hoses, standpipe kits, and handie-talkies.
bullet There is no water immediately available for fighting the fires. (However, this concern is apparently contradicted by reports that two or three fireboats are moored nearby, specifically to provide water-pumping capacity for the WTC site.)
Therefore, at around 2:30 p.m., fire officers decide to completely abandon WTC 7 and a final order is given to evacuate the site. Firefighters and other emergency workers will be withdrawn from the surrounding area (see (4:30 p.m.) September 11, 2001), and Building 7 collapses later in the afternoon (see (5:20 p.m.) September 11, 2001). [Firehouse (.com), 9/17/2001; National Institute of Standards and Technology, 9/2005, pp. 110-111]

Entity Tags: New York City Fire Department, World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, Key Day of 9/11 Events, World Trade Center, 9/11 Investigations


Several small fires burn inside World Trade Center Building 7.
Several small fires burn inside World Trade Center Building 7. [Source: New York City Police Department]World Trade Center Building 7 is reported to be on fire. [CNN, 9/12/2001]

Entity Tags: World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

Fred Simms.Fred Simms. [Source: Con Edison]After the fire department informs it that Building 7 of the World Trade Center could collapse, New York power company Con Edison shuts off power to this building. [9/11 Commission, 2/26/2004 pdf file] Con Edison has a major electrical substation on the first and second floors of WTC 7. [New York Times, 9/11/2002; National Institute of Standards and Technology, 11/2008, pp. 5 pdf file] Its representatives who had been in WTC 7 did not think that the building would come down. But, at 4:15 p.m., Con Edison emergency field manager Fred Simms speaks to the New York Fire Department and then tells his company’s headquarters that the fire department thinks WTC 7 will collapse. The fire department then asks Con Edison to shut down the power to WTC 7, which it does. [City of New York, 6/13/2002; 9/11 Commission, 2/26/2004 pdf file] Electric power to Con Edison’s lower Manhattan substation at WTC 7 is shut off at 4:33 p.m. [National Institute of Standards and Technology, 11/2008, pp. 303 pdf file] Also around this time, people are evacuated from the area around WTC 7, due to concerns that the building could collapse (see (4:30 p.m.) September 11, 2001). [Kansas City Star, 3/28/2004] WTC 7, a 47-story tower located just to the north of the main WTC complex, will come down at 5:20 p.m. (see (5:20 p.m.) September 11, 2001). [National Institute of Standards and Technology, 11/2008, pp. xxxv pdf file] The Con Edison electrical substation below it will be destroyed in this collapse. [New York Times, 9/11/2002]

Entity Tags: Con Edison, New York City Fire Department, Fred Simms, World Trade Center

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Building 7 of the World Trade Center, located across the street from the Twin Towers, caught fire after the initial attacks on the WTC. [CNN, 9/12/2001] By 4:10 in the afternoon, CNN had reported it being on fire (see 4:10 p.m. September 11, 2001). Subsequently it is reported that WTC 7 is in danger of collapsing or may have already collapsed. At around 4:15 p.m., CNN reports, “We’re getting information that one of the other buildings… Building 7… is on fire and has either collapsed or is collapsing… now we’re told there is a fire there and that the building may collapse as well.” About 12 minutes later, BBC reporter Greg Barrow, who is in New York, appears on the BBC radio channel Five Live and says, “We are hearing reports from local media that another building may have caught light and is in danger of collapse.” He adds, “I’m not sure if it has yet collapsed but the report we have is talking about Building 7.” Around this time, the area around Building 7 is being evacuated, apparently because senior firefighters have determined it is in danger of collapsing (see (4:30 p.m.) September 11, 2001). At 4:53, based on the earlier reports, the Radio Five Live show’s presenter will incorrectly claim that Building 7 has already collapsed, saying, “Twenty-five minutes ago we had reports from Greg Barrow that another large building has collapsed just over an hour ago.” [BBC, 3/2/2007] Starting at 4:54, BBC television will also begin reporting that Building 7 has already collapsed (see 4:54 p.m.-5:10 p.m. September 11, 2001). In fact, it does not do so until 5:20 (see (5:20 p.m.) September 11, 2001).

Entity Tags: World Trade Center, CNN, British Broadcasting Corporation

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

According to numerous rescue and recovery workers, the area around WTC Building 7 is evacuated at this time. [Kansas City Star, 3/28/2004] For example:
bullet Emergency medical technician Joseph Fortis says, “They pulled us all back at the time, almost about an hour before it, because they were sure—they knew it was going to come down, but they weren’t sure.” [City of New York, 11/9/2001]
bullet Firefighter Edward Kennedy says, ” I remember [Chief Visconti] screaming about 7, No. 7, that they wanted everybody away from 7 because 7 was definitely going to collapse.” [City of New York, 1/17/2002]
bullet Firefighter Vincent Massa: “They were concerned about seven coming down, and they kept changing us, establishing a collapse zone and backing us up.” [City of New York, 12/4/2001]
bullet Firefighter Tiernach Cassidy: “[B]uilding seven was in eminent collapse. They blew the horns. They said everyone clear the area until we got that last civilian out.” [City of New York, 12/30/2001]
bullet Battalion Fire Chief John Norman: “I was detailed to make sure the collapse zone for 7 WTC had been set up and was being maintained.” [Fire Engineering, 10/2002]
Several New York Fire Department chief officers, who have surveyed Building 7, have apparently determined it is in danger of collapsing. [Fire Engineering, 9/2002] For example, Fire Chief Daniel Nigro explains their decision-making process, saying, “A number of fire officers and companies assessed the damage to the building. The appraisals indicated that the building’s integrity was in serious doubt. I issued the orders to pull back the firefighters and define the collapse zone.” [Fire Engineering, 9/2002] Fire Chief Frank Fellini says, “We were concerned that the fires on several floors and the missing steel would result in the building collapsing.” [City of New York, 12/3/2001] And Fire Captain Ray Goldbach says, “[W]e made a decision to take all of our units out of 7 World Trade Center because there was a potential for collapse.” [City of New York, 10/24/2001] However, some firefighters seem surprised at this decision. When Fire Commissioner Thomas Von Essen is making his way through hundreds of firefighters who are being held away from the WTC site, he hears complaints like, “It could take days for that building to come down,” and, “Why don’t they let us in there?” [Essen, 2002, pp. 45] When Deputy Fire Chief Nick Visconti is instructing firefighters to evacuate the area, one comment he receives is, “[O]h, that building is never coming down, that didn’t get hit by a plane, why isn’t somebody in there putting the fire out?” [Firehouse Magazine, 9/9/2002]

Entity Tags: Nick Visconti, Daniel Nigro, Joseph Fortis, John Norman, World Trade Center, Ray Goldbach, Thomas Von Essen, Edward M. (“Ted”) Kennedy, Vincent Massa, Tiernach Cassidy, Frank Fellini

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, Key Day of 9/11 Events, World Trade Center, 9/11 Investigations

The BBC’s Jane Standley, reporting the collapse of WTC 7 while it is visible still standing behind her.The BBC’s Jane Standley, reporting the collapse of WTC 7 while it is visible still standing behind her. [Source: BBC]Several times, the BBC reports that Building 7 of the World Trade Center has collapsed, when it is in fact still standing. At 4:54 p.m., its domestic television news channel, BBC News 24, reports, “We’re now being told that yet another enormous building has collapsed… it is the 47-story Salomon Brothers building [i.e. WTC 7].” Three minutes later, its international channel, BBC World, reports, “We’ve got some news just coming in actually that the Salomon brothers building in New York right in the heart of Manhattan has also collapsed.” Then, at about 5:10 p.m., BBC World repeats the claim: “I was talking a few moments ago about the Salomon building collapsing and indeed it has… it seems this wasn’t the result of a new attack but because the building had been weakened during this morning’s attack.” Yet WTC 7 does not collapse until 5:20 p.m., over 25 minutes after the BBC first reported it (see (5:20 p.m.) September 11, 2001). The BBC’s live shot even shows the building still standing in the background, while its collapse is being reported. When these reports come to light early in 2007, Richard Porter, the head of news for BBC World, will suggest the error was due to the “confusing and chaotic situation on the ground” on 9/11. [BBC, 3/2/2007] Starting around 4:15 p.m., CNN and other news outlets had been reporting that WTC 7 was in danger of collapsing or may already have collapsed (see (4:15 p.m.-4:27 p.m.) September 11, 2001).

Entity Tags: World Trade Center, British Broadcasting Corporation

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, World Trade Center

Mark Jacobson, a reporter for New York Magazine, later recounts an encounter he has about this time. Walking through the ruins of the World Trade Center complex, he sits down next to a weary and dust covered firefighter. The firefighter points to WTC Building 7, perhaps 400 yards away, and says, “That building is coming down.” Jacobson asks when and the firefighter responds, “Tonight. Maybe tomorrow morning.” Jacobson watches as the building collapses about five minutes later. [New York Magazine, 3/20/2006]

Entity Tags: Mark Jacobson

Timeline Tags: 9/11 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, World Trade Center, 9/11 Investigations

A four-image progression of photos showing World Trade Center Building 7 collapsing down into its footprint.A four-image progression of photos showing World Trade Center Building 7 collapsing down into its footprint. [Source: unknown] (click image to enlarge)Building 7 of the World Trade Center complex, a 47-story tower, collapses. No one is killed. [CNN, 9/12/2001; Washington Post, 9/12/2001; MSNBC, 9/22/2001; Associated Press, 8/21/2002] It collapses in 6.6 seconds, which is just 0.6 of a second longer than it would have taken a free-falling object dropped from its roof to hit the ground. [Deseret Morning News, 11/10/2005] Many questions will arise over the cause of its collapse in the coming months and years. Building 7, which was not hit by an airplane, is the first modern, steel-reinforced high-rise to collapse because of fire. [Chicago Tribune, 11/29/2001; Stanford Report, 12/5/2001; New York Times, 3/2/2002] Some will later suggest that the diesel fuel stored in several tanks on the premises may have contributed to the building’s collapse. The building contained a 6,000-gallon tank between its first and second floors and another four tanks, holding as much as 36,000 gallons, below ground level. There were also three smaller tanks on higher floors. [Chicago Tribune, 11/29/2001; New York Times, 3/2/2002; New York Observer, 3/25/2002; Federal Emergency Management Agency, 5/1/2002, pp. 1-17] However, the cause of the collapse is uncertain. A 2002 government report will conclude: “The specifics of the fires in WTC 7 and how they caused the building to collapse remain unknown at this time. Although the total diesel fuel on the premises contained massive potential energy, the best hypothesis has only a low probability of occurrence.” [Federal Emergency Management Agency, 5/1/2002, pp. 1-17] Some reports indicate that the building may have been deliberately destroyed. Shortly after the collapse, CBS News anchor Dan Rather comments that the collapse is “reminiscent of… when a building was deliberately destroyed by well-placed dynamite to knock it down.” [CBS News, 9/11/2001] And moments after the collapse, MSNBC’s Brian Williams joins David Restuccio, an FDNY lieutenant, by phone to ask him about the collapse. “You guys knew this was coming all day?” asks Williams. Restuccio replies: “We had heard reports that the building was unstable, and that it would eventually need to come down on its own, or it would be taken down. I would imagine it came down on its own.” Restuccio does not explain what he means by “it would be taken down.” [MSNBC, 9/11/2001]

Entity Tags: Dan Rather, World Trade Center, David Restuccio

Timeline Tags: 9/11 Timeline

Category Tags: Key Day of 9/11 Events, All Day of 9/11 Events, World Trade Center, WTC Investigation, 9/11 Investigations

Ordering 

Time period


Categories

Key Events

Key Day of 9/11 Events (100)Key Hijacker Events (145)Key Warnings (95)

Day of 9/11

All Day of 9/11 Events (1227)Dick Cheney (52)Donald Rumsfeld (33)Flight AA 11 (145)Flight AA 77 (145)Flight UA 175 (87)Flight UA 93 (240)George Bush (114)Passenger Phone Calls (67)Pentagon (117)Richard Clarke (31)Shanksville, Pennsylvania (23)Training Exercises (56)World Trade Center (87)

The Alleged 9/11 Hijackers

Alhazmi and Almihdhar (343)Marwan Alshehhi (134)Mohamed Atta (205)Hani Hanjour (72)Ziad Jarrah (74)Other 9/11 Hijackers (172)Possible Hijacker Associates in US (80)Alleged Hijackers' Flight Training (73)Hijacker Contact w Government in US (33)Possible 9/11 Hijacker Funding (42)Hijacker Visas and Immigration (135)

Alhazmi and Almihdhar: Specific Cases

Bayoumi and Basnan Saudi Connection (51)CIA Hiding Alhazmi & Almihdhar (120)Search for Alhazmi/ Almihdhar in US (39)

Projects and Programs

Al-Qaeda Malaysia Summit (172)Able Danger (60)Sibel Edmonds (61)Phoenix Memo (27)Randy Glass/ Diamondback (8)Robert Wright and Vulgar Betrayal (67)Remote Surveillance (241)Yemen Hub (75)

Before 9/11

Soviet-Afghan War (105)Warning Signs (432)Insider Trading/ Foreknowledge (53)US Air Security (71)Military Exercises (66)Pipeline Politics (67)Other Pre-9/11 Events (55)

Counterterrorism before 9/11

Hunt for Bin Laden (158)Counterterrorism Action Before 9/11 (223)Counterterrorism Policy/Politics (249)

Warning Signs: Specific Cases

Foreign Intelligence Warnings (35)Bush's Aug. 6, 2001 PDB (39)Presidential Level Warnings (31)

The Post-9/11 World

9/11 Investigations (652)9/11 Related Criminal Proceedings (22)9/11 Denials (29)US Government and 9/11 Criticism (67)9/11 Related Lawsuits (24)Media (47)Other Post-9/11 Events (75)

Investigations: Specific Cases

9/11 Commission (257)Role of Philip Zelikow (87)9/11 Congressional Inquiry (41)CIA OIG 9/11 Report (16)FBI 9/11 Investigation (144)WTC Investigation (112)Other 9/11 Investigations (129)

Possible Al-Qaeda-Linked Moles or Informants

Abu Hamza Al-Masri (102)Abu Qatada (36)Ali Mohamed (78)Haroon Rashid Aswat (17)Khalil Deek (20)Luai Sakra (12)Mamoun Darkazanli (36)Nabil Al-Marabh (41)Omar Bakri & Al-Muhajiroun (25)Reda Hassaine (23)Other Possible Moles or Informants (169)

Other Al-Qaeda-Linked Figures

Abu Zubaida (99)Anwar Al-Awlaki (17)Ayman Al-Zawahiri (81)Hambali (39)Khalid Shaikh Mohammed (139)Mohammed Haydar Zammar (44)Mohammed Jamal Khalifa (47)Osama Bin Laden (228)Ramzi Bin Al-Shibh (105)Ramzi Yousef (67)Sheikh Omar Abdul-Rahman (57)Victor Bout (23)Wadih El-Hage (45)Zacarias Moussaoui (159)

Al-Qaeda by Region

"Lackawanna Six" (13)Al-Qaeda in Balkans (168)Al-Qaeda in Germany (189)Al-Qaeda in Italy (55)Al-Qaeda in Southeast Asia (149)Al-Qaeda in Spain (121)Islamist Militancy in Chechnya (50)

Specific Alleged Al-Qaeda Linked Attacks or Plots

1993 WTC Bombing (73)1993 Somalia Fighting (13)1995 Bojinka Plot (78)1998 US Embassy Bombings (121)Millennium Bomb Plots (43)2000 USS Cole Bombing (114)2001 Attempted Shoe Bombing (23)2002 Bali Bombings (36)2004 Madrid Train Bombings (82)2005 7/7 London Bombings (87)

Miscellaneous Al-Qaeda Issues

Alleged Al-Qaeda Linked Attacks (89)Alleged Al-Qaeda Media Statements (102)Key Captures and Deaths (124)

Geopolitics and Islamic Militancy

US Dominance (112)Alleged Iraq-Al-Qaeda Links (255)Iraq War Impact on Counterterrorism (83)Israel (61)Pakistan and the ISI (470)Saudi Arabia (249)Terrorism Financing (312)Londonistan - UK Counterterrorism (322)US Intel Links to Islamic Militancy (69)Algerian Militant Collusion (41)Indonesian Militant Collusion (20)Philippine Militant Collusion (74)Yemeni Militant Collusion (47)Other Government-Militant Collusion (23)

Pakistan / ISI: Specific Cases

Pakistani Nukes & Islamic Militancy (37)Pakistani ISI Links to 9/11 (73)Saeed Sheikh (59)Mahmood Ahmed (30)Haven in Pakistan Tribal Region (179)2008 Kabul Indian Embassy Bombing (10)Hunt for Bin Laden in Pakistan (154)

Terrorism Financing: Specific Cases

Al Taqwa Bank (29)Al-Kifah/MAK (54)BCCI (37)BIF (28)BMI and Ptech (21)Bin Laden Family (62)Drugs (71)

'War on Terrorism' Outside Iraq

Afghanistan (299)Drone Use in Pakistan / Afghanistan (49)Destruction of CIA Tapes (92)Escape From Afghanistan (61)High Value Detainees (179)Terror Alerts (50)Counterterrorism Action After 9/11 (352)Counterterrorism Policy/Politics (432)Internal US Security After 9/11 (125)
Email Updates

Receive weekly email updates summarizing what contributors have added to the History Commons database

 
Donate

Developing and maintaining this site is very labor intensive. If you find it useful, please give us a hand and donate what you can.
Donate Now

Volunteer

If you would like to help us with this effort, please contact us. We need help with programming (Java, JDO, mysql, and xml), design, networking, and publicity. If you want to contribute information to this site, click the register link at the top of the page, and start contributing.
Contact Us

Creative Commons License Except where otherwise noted, the textual content of each timeline is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike