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9/11 Timeline

Investigations: Specific Cases

Project: 9/11 Timeline
Open-Content project managed by matt, Paul, KJF

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Peter Caram.Peter Caram. [Source: SRR Training]The New York Port Authority, which owns the World Trade Center, is aware of terrorism occurring around the world and that the WTC is vulnerable to attack. It has therefore created the Terrorist Intelligence Unit within its police department, headed by Detective Sergeant Peter Caram, to gather information about terrorist groups and assess the vulnerability of its numerous facilities to attack. On this day, Caram writes a memo to the assistant superintendent of the Port Authority Police Department, reporting that the FBI has uncovered a terrorist threat: Two supporters of Ayatollah Khomeini are allegedly planning to bomb the WTC in the near future. Although the attack never occurs, this is the first of numerous occasions during the 1980s where the WTC is considered a potential target for a terrorist attack. [Caram, 2001, pp. 4-5; New York County Supreme Court, 1/20/2004]

Entity Tags: World Trade Center, Peter Caram

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

Detective Sergeant Peter Caram, the head of the New York Port Authority’s Terrorist Intelligence Unit, has been directed by the assistant superintendent of the Port Authority Police Department to compile a report on the vulnerability of the WTC to a terrorist attack. Having previously worked at the WTC Command, Caram has exclusive knowledge of some of the center’s security weaknesses. On this day he issues his four-page report, titled “Terrorist Threat and Targeting Assessment: World Trade Center.” It looks at the reasoning behind why the WTC might be singled out for attack, and identifies three areas of particular vulnerability: the perimeter of the WTC complex, the truck dock entrance, and the subgrade area (the lower floors below ground level). Caram specifically mentions that terrorists could use a car bomb in the subgrade area—a situation similar to what occurs in the 1993 bombing (see February 26, 1993). [Caram, 2001, pp. 5, 84-85; New York County Supreme Court, 1/20/2004] This is the first of several reports during the 1980s, identifying the WTC as a potential terrorist target.

Entity Tags: World Trade Center, Peter Caram

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

Peter Goldmark.Peter Goldmark. [Source: Environmental Defense Fund]Peter Goldmark, the executive director of the New York Port Authority, is concerned that, in light of terrorist attacks occurring around the world (see April 18-October 23, 1983), Port Authority facilities, including the World Trade Center, could become terrorist targets. [Associated Press, 9/28/2005; New York Times, 10/27/2005] He therefore creates a unit called the Office of Special Planning (OSP) to evaluate the vulnerabilities of all Port Authority facilities and present recommendations to minimize the risks of attack. The OSP is staffed by Port Authority police and civilian workers, and is headed by Edward O’Sullivan, who has experience in counterterrorism from earlier careers in the Navy and Marine Corps. In carrying out its work, the OSP will consult with such US agencies as the FBI, CIA, Secret Service, NSA, and Defense Department. It will also consult with security officials from other countries that have gained expertise in combating terrorism, such as England, France, Italy, and Israel. [Glanz and Lipton, 2004, pp. 226; New York County Supreme Court, 1/20/2004] According to Peter Caram, head of the Port Authority’s Terrorist Intelligence Unit, the OSP will develop “an expertise unmatched in the United States.” [Caram, 2001, pp. 12] In 1985 it will issue a report called “Counter-Terrorism Perspectives: The World Trade Center” (see November 1985). [New York Court of Appeals, 2/16/1999] It will exist until 1987. [Village Voice, 1/5/2000]

Entity Tags: Office of Special Planning, Peter Goldmark, Port Authority of New York and New Jersey

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

The Office of Special Planning (OSP), a unit set up by the New York Port Authority to assess the security of its facilities against terrorist attacks (see Early 1984), spends four to six months studying the World Trade Center. It examines the center’s design through looking at photographs, blueprints, and plans. It brings in experts such as the builders of the center, plus experts in sabotage and explosives, and has them walk through the WTC to identify any areas of vulnerability. According to New York Times reporters James Glanz and Eric Lipton, when Edward O’Sullivan, head of the OSP, looks at WTC security, he finds “one vulnerability after another. Explosive charges could be placed at key locations in the power system. Chemical or biological agents could be dropped into the coolant system. The Hudson River water intake could be blown up. Someone might even try to infiltrate the large and vulnerable subterranean realms of the World Trade Center site.” In particular, “There was no control at all over access to the underground, two-thousand-car parking garage.” However, O’Sullivan consults “one of the trade center’s original structural engineers, Les Robertson, on whether the towers would collapse because of a bomb or a collision with a slow-moving airplane.” He is told there is “little likelihood of a collapse no matter how the building was attacked.” [Glanz and Lipton, 2004, pp. 227; New York County Supreme Court, 1/20/2004] The OSP will issue its report called “Counter-Terrorism Perspectives: The World Trade Center” late in 1985 (see November 1985).

Entity Tags: Office of Special Planning, Leslie Robertson, Edward O’Sullivan, World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

Charles Schnabolk.Charles Schnabolk. [Source: Institute for Design Professionals]While the Office of Special Planning is still working on its report about the vulnerability of the World Trade Center to terrorist attack, the New York Port Authority hired security consultant Charles Schnabolk to also review the center’s security systems. [UExpress (.com), 10/12/2001; New York County Supreme Court, 1/20/2004] Schnabolk was involved in designing the original security system when the WTC complex was built. [Institue for Design Professionals, 2009; The Security Design Group, 2010] This month his secret report, titled “Terrorism Threat Perspective and Proposed Response for the World Trade Center” is released. It sets out four levels of possible terrorism against the center, and gives examples of each: ”(1) PREDICTABLE—Bomb threats; (2) PROBABLE—Bombing attempts, computer crime; (3) POSSIBLE—Hostage taking; (4) CATASTROPHIC—Aerial bombing, chemical agents in water supply or air conditioning (caused by agents of a foreign government or a programmed suicide).” Similar to other reports in the mid-1980s, it also warns that the WTC “is highly vulnerable through the parking lot.” [UExpress (.com), 10/12/2001; New York County Supreme Court, 1/20/2004]

Entity Tags: Charles Schnabolk, World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing, WTC Investigation, 1993 WTC Bombing

After assessing the security of New York Port Authority facilities, the Office of Special Planning (OSP), the Port Authority’s own antiterrorist task force, releases a report called “Counter-Terrorism Perspectives: The World Trade Center.” For security purposes, only seven copies are made, being hand-delivered and signed for by its various recipients, including the executive director of the Port Authority, the superintendent of the Port Authority Police, and the director of the World Trade Department. [New York Court of Appeals, 2/16/1999; Village Voice, 1/5/2000] Because of the WTC’s visibility, symbolic value, and it being immediately recognizable to people from around the world, the report concludes that the center is a “most attractive terrorist target.” [New York County Supreme Court, 1/20/2004] The report, which is 120 pages long, lists various possible methods of attacking the center. [New York Court of Appeals, 2/16/1999; Caram, 2001, pp. 103; Barrett and Collins, 2006, pp. 87] One of these is that a “time bomb-laden vehicle could be driven into the WTC and parked in the public parking area.… At a predetermined time, the bomb could be exploded in the basement.” [Glanz and Lipton, 2004, pp. 227] As a Senate Committee Report will find in August 1993, “The specifics of the February 26, 1993 bombing at the World Trade Center garage were almost identical to those envisioned in the [OSP] report.” [New York Court of Appeals, 2/16/1999] Due to the Port Authority’s failure to adequately implement the OSP’s recommendations, the report will be crucial evidence in a successful civil trial against it in October 2005, charging negligence in failing to prevent the 1993 bombing. [Bloomberg, 10/26/2005; New York Times, 10/27/2005; New York Times, 2/18/2006] As of mid-2006, the other possible methods of attacking the WTC listed in the report remain undisclosed.

Entity Tags: Office of Special Planning, World Trade Center, World Trade Department, Port Authority of New York and New Jersey

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

Hamilton and Cheney hold a press conference together about the Iran-Contra Affair investigation on June 19, 1987.Hamilton and Cheney hold a press conference together about the Iran-Contra Affair investigation on June 19, 1987. [Source: J. Scott Applewhite]Future 9/11 Commission vice chairman Lee Hamilton (D-IN), at this time chairman of the House Intelligence Committee, fails to properly investigate Iran-Contra allegations. He learns of press reports indicating that the Reagan administration is illegally funneling weapons and money to the anti-Communist rebels in Nicaragua, but when the White House denies the story, Hamilton believes it. Hamilton will later acknowledge that he has been gullible, and will say of his political style, “I don’t go for the jugular.” It is during the Iran-Contra investigation that Hamilton becomes friends with Dick Cheney, at this time a Republican congressman. [Shenon, 2008, pp. 33] Cheney is the ranking Republican on the House Intelligence Committee and so must work closely with Hamilton, including on the Iran-Contra investigation. [PBS, 6/20/2006] Hamilton calls Cheney “Dick” and they will remain friends even after Cheney becomes vice president in 2001 and Hamilton, as vice chairman of the 9/11 Commission, begins to investigate Cheney’s actions as a part of the Commission’s work. [Shenon, 2008, pp. 33] Hamilton will also fail to properly investigate “October Surprise” allegations (see 1992-January 1993).

Entity Tags: Lee Hamilton

Timeline Tags: US confrontation with Iran, Complete 911 Timeline, Iran-Contra Affair

Category Tags: 9/11 Commission, 9/11 Investigations

Following the release of the Office of Special Planning’s (OSP) report, which called the WTC a “most attractive terrorist target” (see November 1985), the New York Port Authority, which owns the center, seeks a second opinion on the OSP’s recommendations. At a cost of approximately $100,000, it hires the Science Applications International Corporation (SAIC) to review the general security of the WTC. SAIC states in its report that the attractiveness of the WTC’s public areas to terrorists is “very high.” Like the OSP, SAIC pays particular attention to the underground levels of the center and describes a possible attack scenario much like what occurs in the 1993 bombing. [Caram, 2001, pp. 105-106; New York County Supreme Court, 1/20/2004]

Entity Tags: World Trade Center, Science Applications International Corporation (SAIC), Port Authority of New York and New Jersey

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

The New York Port Authority’s Office of Special Planning (OSP) is closed down. It had been established in 1984 (see Early 1984) to evaluate and address the vulnerabilities of Port Authority facilities, including the World Trade Center, to terrorist attacks. [Village Voice, 1/5/2000; New York County Supreme Court, 1/20/2004] The reasons for the closure are unknown. However, Peter Goldmark, who’d created the OSP, had resigned as executive director of the Port Authority in 1985 to take a new job. [Glanz and Lipton, 2004, pp. 226-228] So the absence of his support for the office may have been a factor.

Entity Tags: Office of Special Planning

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

During the mid-1980s, a series of reports described the vulnerability of the World Trade Center to terrorist attack (see July 1985)(see November 1985)(see (Mid-1986)). Now, because of the increased risk of terrorism against the US due to the Gulf War, the New York Port Authority hires private security company Burns and Roe Securacom to prepare a further report, and tells them that the WTC is a terrorist target. Unlike previous investigators, Burns and Roe Securacom finds that the center’s shopping and pedestrian areas, rather than the underground parking garage, are the most likely targets. [New York County Supreme Court, 1/20/2004; New York Times, 10/27/2005] After separating from Burns and Roe, Securacom (later called Stratesec) will become one of a number of firms involved in providing security at the WTC, right up to the day of 9/11 (see October 1996). [Progressive Populist, 3/1/2003]

Entity Tags: World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

In the wake of the WTC bombing, the Seattle Times interviews John Skilling who was one of the two structural engineers responsible for designing the Trade Center. Skilling recounts his people having carried out an analysis which found the Twin Towers could withstand the impact of a Boeing 707. He says, “Our analysis indicated the biggest problem would be the fact that all the fuel (from the airplane) would dump into the building. There would be a horrendous fire. A lot of people would be killed.” But, he says, “The building structure would still be there.” [Seattle Times, 2/27/1993] The analysis Skilling is referring to is likely one done in early 1964, during the design phase of the towers. A three-page white paper, dated February 3, 1964, described its findings: “The buildings have been investigated and found to be safe in an assumed collision with a large jet airliner (Boeing 707—DC 8) traveling at 600 miles per hour. Analysis indicates that such collision would result in only local damage which could not cause collapse or substantial damage to the building and would not endanger the lives and safety of occupants not in the immediate area of impact.” However, besides this paper, no documents are known detailing how this analysis was made. [Glanz and Lipton, 2004, pp. 131-132; Lew, Bukowski, and Carino, 10/2005, pp. 70-71] The other structural engineer who designed the towers, Leslie Robertson, carried out a second study later in 1964, of how the towers would handle the impact of a 707 (see Between September 3, 2001 and September 7, 2001). However, the National Institute of Standards and Technology (NIST), following its three-year investigation into the WTC collapses, will in 2005 state that it has been “unable to locate any evidence to indicate consideration of the extent of impact-induced structural damage or the size of a fire that could be created by thousands of gallons of jet fuel.” [National Institute of Standards and Technology, 9/2005, pp. 13]

Entity Tags: World Trade Center, John Skilling

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

Rick Rescorla.Rick Rescorla. [Source: Public domain]Rick Rescorla, a security chief for a company at the World Trade Center, and his friend Dan Hill conduct an analysis of the security measures at the WTC and conclude that terrorists will likely attack the Twin Towers again, probably by crashing a plane into them. Rescorla, who has served in the US Army and worked for British military intelligence, is now the director of security at brokerage firm Dean Witter. His office is on the 44th floor of the WTC’s South Tower. [Washington Post, 10/28/2001; Stewart, 2002, pp. 193-194; New Yorker, 2/11/2002] After the WTC is bombed in February 1993 (see February 26, 1993), Rescorla calls Hill to New York to be his security consultant and assess the situation. [Stewart, 2002, pp. 191; Steve Humphries, 9/11/2005] Hill is a former Army Ranger and has had training in counterterrorism. [New Yorker, 2/11/2002; St. Augustine Record, 8/14/2011]
Anti-American Hostility Found at Mosques - Hill and Rescorla suspect that the WTC bombing was committed by Muslims. Rescorla suggests that Hill, who is himself a Muslim and speaks Arabic, try to gather some intelligence. Hill therefore lets his beard grow and visits several mosques in New Jersey. He gets into conversations with people at the mosques, expressing pro-Islamic opinions and taking an anti-American line. According to journalist and author James B. Stewart: “[A]t every other location, Hill was struck by the intense anti-American hostility he encountered. Though these were not his own views, he barely had to mention that he thought American policy toward Israel and the Middle East was misguided, or that Jews wielded too much political power, to unleash a torrent of anti-American, anti-Semitic rhetoric. Many applauded the bombing of the World Trade Center, lamenting that it hadn’t done more damage.” Referring to his experiences at the mosques, Hill tells Rescorla, “We’ve got a problem.” He also believes that, as the symbolic “tower of the Jews,” the WTC is likely to remain a target for terrorists. [Stewart, 2002, pp. 192-193; New Yorker, 2/11/2002]
Rescorla Thinks Terrorists Will Use a Different Method of Attack - Rescorla thinks that since terrorists failed to bring the Twin Towers down with a truck bomb, they may in future try a different method of attack, such as using a small, portable nuclear weapon or flying a plane into the building. He phones his friend Fred McBee and asks him to examine the possibility of an air attack on the WTC. By using a flight simulator on his computer, McBee concludes that such an attack seems “very viable” (see Shortly After February 26, 1993). [Stewart, 2002, pp. 193; Steve Humphries, 9/11/2005]
Report Warns of Another Attack on the WTC - Hill and Rescorla write a report incorporating their findings and analysis. The report warns that the WTC will likely remain a target for anti-American militants. It notes that Muslim terrorists are showing increasing tactical and technological awareness, and that the numerous young Muslims living in the United States constitute a potential “enemy within.” Rescorla states that terrorists will not rest until they have succeeded in bringing down the Twin Towers.
Hill and Rescorla Suggest Terrorists Flying a Plane into the WTC - Rescorla and Hill also lay out what they think the next terrorist attack could look like. According to Stewart, it would involve “an air attack on the Twin Towers, probably a cargo plane traveling from the Middle East or Europe to Kennedy or Newark Airport, loaded with explosives, chemical or biological weapons, or even a small nuclear weapon. Besides New York, other cities might be targeted, such as Washington or Philadelphia. Perhaps terrorists would attack all three.” Rescorla and Hill’s report concludes that Rescorla’s company, Dean Witter, should leave the WTC and move to somewhere safer in New Jersey. However, Dean Witter’s lease does not expire until 2006, and so the company will remain at the WTC. But Rescorla will start conducting regular evacuation drills for all its employees in the South Tower. [Stewart, 2002, pp. 193-194; New Yorker, 2/11/2002] Rescorla will be in his office at the WTC on 9/11. He will personally escort his company’s employees out of the South Tower, but die himself when the tower collapses. [Washington Post, 10/28/2001; BBC, 2/10/2003]

Entity Tags: World Trade Center, Rick Rescorla, Daniel J. Hill, Fred McBee

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing

Brian Michael Jenkins.Brian Michael Jenkins. [Source: Rand Corporation]Following the 1993 World Trade Center bombing (see February 26, 1993), the New York Port Authority asks investigative and security consulting firm Kroll Associates to help design new security measures for the WTC. Kroll’s Deputy Chairman Brian Michael Jenkins leads the analysis of future terrorist threats and how they might be addressed. Assessments conclude that a second terrorist attack against the WTC is probable. Although it is considered unlikely, the possibility of terrorists deliberately flying a plane into the WTC towers is included in the range of possible threats. [Jenkins and Edwards-Winslow, 9/2003, pp. 11; New Yorker, 10/19/2009 pdf file]

Entity Tags: World Trade Center, Brian Michael Jenkins, Kroll Associates, Port Authority of New York and New Jersey

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 1993 WTC Bombing, WTC Investigation, 1993 WTC Bombing

’Germany Unified and Europe Transformed: A Study in Statecraft,’ by Philip Zelikow and Condoleezza Rice.’Germany Unified and Europe Transformed: A Study in Statecraft,’ by Philip Zelikow and Condoleezza Rice. [Source: Harvard University Press]Future National Security Adviser and Secretary of State Condoleezza Rice and Philip Zelikow, who, as executive director of the 9/11 Commission, will investigate her performance in the run-up to 9/11, co-author a book about the implications of German reunification. The two had worked together on the National Security Council in the 1980s and early 90s, but are both now working at universities. Zelikow is a professor at the Kennedy School of Government at Harvard University, and Rice is the provost at Stanford. The book, entitled Germany Unified and Europe Transformed: A Study in Statecraft, is mostly written by Zelikow, who is, in author Philip Shenon’s words, “pleased to share credit with such an obvious up-and-comer as Rice.” [Shenon, 2008, pp. 40-41]

Entity Tags: Condoleezza Rice, Philip Shenon, Philip Zelikow

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Commission, Role of Philip Zelikow

New York City’s Office of Emergency Management (OEM) holds regular interagency training exercises in the years preceding 9/11, aiming to carry out a tabletop or field exercise every eight to 12 weeks. Mayor Rudy Giuliani is personally involved in many of these. The exercises are very lifelike. Giuliani will later recall, “We used to take pictures of these trial runs and they were so realistic that people who saw them would ask when the event shown in the photograph had occurred.” Scenarios drilled include a sarin gas attack in Manhattan, anthrax attacks, and truck bombs. One exercise, which takes place in May 2001, is based on terrorists attacking New York with bubonic plague (see May 11, 2001). Another, conducted in conjunction with the New York Port Authority, includes a simulated plane crash. Just one week before 9/11, the OEM is preparing a tabletop exercise with the Metropolitan Transportation Authority, to develop plans for business continuity in New York’s Financial District—where the World Trade Center is located—after a terrorist attack (see (September 4, 2001)). OEM staffers are actually preparing for a bioterrorism exercise on the morning of 9/11 (see 8:48 a.m. September 11, 2001 and September 12, 2001). Jerome Hauer, OEM director from 1996 to February 2000, will recall, “We looked at every conceivable threat that anyone on the staff could think of, be it natural or intentional, but not the use of aircraft as missiles.” He will tell the 9/11 Commission: “We had aircraft crash drills on a regular basis. The general consensus in the city was that a plane hitting a building… was that it would be a high-rise fire.… There was never a sense, as I said in my testimony, that aircraft were going to be used as missiles.” [Time, 12/22/2001; Giuliani, 2002, pp. 62-63; Jenkins and Edwards-Winslow, 9/2003, pp. 15, 30; 9/11 Commission, 5/19/2004; 9/11 Commission, 5/19/2004 pdf file] The OEM was created in 1996 by Giuliani to manage New York’s response to major incidents, including terrorist attacks (see 1996). [9/11 Commission, 7/24/2004, pp. 283-284]

Entity Tags: Office of Emergency Management, New York City Metropolitan Transportation Authority, Port Authority of New York and New Jersey, Rudolph (“Rudy”) Giuliani, Jerome Hauer

Timeline Tags: Complete 911 Timeline

Category Tags: Counterterrorism Policy/Politics, Military Exercises, WTC Investigation

Ashton Carter.Ashton Carter. [Source: Aspen Institute]Over a period of nine months, faculty from Harvard University, Stanford University, the Massachusetts Institute of Technology, and the University of Virginia meet in a collaborative effort called the Catastrophic Terrorism Study Group. Its members include experts on terrorism, national security, intelligence, and law enforcement. The project director is Philip Zelikow, future executive director of the 9/11 Commission. Future 9/11 Commissioner Jamie Gorelick is also a member, along with Ernest May, who will be a senior advisor to the 9/11 Commission. The culmination of the group’s efforts is a report written by Zelikow and its two co-chairs: former Assistant Secretary of Defense Ashton Carter and former CIA Director John Deutch. A condensed version of the report is published in the journal Foreign Affairs in late 1998. They write: “Long part of the Hollywood and Tom Clancy repertory of nightmarish scenarios, catastrophic terrorism has moved from far-fetched horror to a contingency that could happen next month. Although the United States still takes conventional terrorism seriously… it is not yet prepared for the new threat of catastrophic terrorism.” They predict the consequences of such an event: “An act of catastrophic terrorism that killed thousands or tens of thousands of people and/or disrupted the necessities of life for hundreds of thousands, or even millions, would be a watershed event in America’s history. It could involve loss of life and property unprecedented for peacetime and undermine Americans’ fundamental sense of security within their own borders in a manner akin to the 1949 Soviet atomic bomb test, or perhaps even worse. Constitutional liberties would be challenged as the United States sought to protect itself from further attacks by pressing against allowable limits in surveillance of citizens, detention of suspects, and the use of deadly force. More violence would follow, either as other terrorists seek to imitate this great ‘success’ or as the United States strikes out at those considered responsible. Like Pearl Harbor, such an event would divide our past and future into a ‘before’ and ‘after.’” [Carter, Deutch, and Zelikow, 10/1998; Foreign Affairs, 11/1998; 9/11 Commission, 7/24/2004, pp. xi-xiv]

Entity Tags: Jamie Gorelick, Philip Zelikow, John Deutch, Catastrophic Terrorism Study Group, Ernest May, Ashton Carter

Timeline Tags: Complete 911 Timeline

Category Tags: Role of Philip Zelikow, Other Pre-9/11 Events

In his opening remarks at a conference on contemporary political history organized by the Miller Center of Public Affairs at the University of Virginia, future 9/11 Commission Executive Director Philip Zelikow emphasizes that the public understanding of history is shaped by what are sometimes referred to as “public myths.” “[U]nderstanding contemporary political history is extremely important and constantly alive in public discourse. ‘Contemporary’ is defined functionally by those critical people and events that go into forming the public’s presumptions about its immediate past. This idea of ‘public presumption’ is akin to William McNeill’s notion of ‘public myth’ but without the negative implication sometimes invoked by the word ‘myth.’ Such presumptions are beliefs (1) thought to be true (although not necessarily known to be true with certainty), and (2) shared in common within the relevant political community. The sources for such presumptions are both personal (from direct experience) and vicarious (from books, movies, and myths).” Zelikow says that public assumptions often grow out of “searing events”: “particularly ‘searing’ or ‘molding’ events take on ‘transcendent’ importance and, therefore, retain their power even as the experiencing generation passes from the scene.” [Zelikow, 1999 pdf file] In a previous publication, Zelikow had written about how a “catastrophic terrorism” event could constitute a momentous, history-shaping milestone: “An act of catastrophic terrorism that killed thousands or tens of thousands of people… would be a watershed event in America’s history.… Like Pearl Harbor, such an event would divide our past and future into a ‘before’ and ‘after’” (see November 1997-August 1998).

Entity Tags: Philip Zelikow

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Commission, Role of Philip Zelikow

Giuliani’s emergency command center.Giuliani’s emergency command center. [Source: CNN]New York City Mayor Rudolph Giuliani opens a $13 million emergency command center on the 23rd floor of World Trade Center Building 7. [Newsday, 9/12/2001] The center is intended to coordinate responses to various emergencies, including natural disasters like hurricanes or floods, and terrorist attacks. The 50,000 square foot center has reinforced, bulletproof, and bomb-resistant walls, its own air supply and water tank, beds, showers to accommodate 30 people, and three backup generators. It also has rooms full of video monitors from where the mayor can oversee police and fire department responses. It is to be staffed around the clock and is intended as a meeting place for city leaders in the event of an act of terrorism. [CNN, 6/7/1999; London Times, 9/12/2001; Glanz and Lipton, 2004, pp. 233] The center is ridiculed as “Rudy’s bunker.” [Time, 12/22/2001] Author Philip Shenon will later comment that it “seemed the supreme example of how Giuliani’s ego and arrogance knew no bounds after four years in office,” and: “WABC Radio mocked Giuliani with a name-that-bunker contest for its listeners. Among the most popular entries: ‘Rudy’s Nuclear Winter Palace’ and ‘The Nut Shell.’” It is criticized because of the cost and because of the location, next to the WTC towers, one of the city’s top terrorist targets. In addition, the high floor it is on means it is vulnerable to power, water, and elevator outages. [Shenon, 2008, pp. 346-347] Most controversial is the 6,000-gallon fuel tank. In 1998 and 1999, Fire Department officials warn that the fuel tank violates city fire codes and poses a hazard. According to one Fire Department memorandum, if the tank were to catch fire it could produce “disaster.” Building 7 will be destroyed late in the day on 9/11; some suspect this tank helps explains why. [New York Times, 12/20/2001]

Entity Tags: Rudolph (“Rudy”) Giuliani, Office of Emergency Management, World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: Counterterrorism Policy/Politics, 9/11 Investigations, WTC Investigation

The North Tower of the WTC suffers a fire on its 104th floor. This is the 15th and last of what the National Institute of Standards and Technology later describes as “significant fires,” which occurred in the Twin Towers from 1975 onwards, and prior to 9/11. These fires each activate up to three sprinklers but are confined to just one floor. [Kuligowski, Evans, and Peacock, 9/2005, pp. 7-11] Additionally, on February 14, 1975 a major fire occurred, the result of arson, which began on the 11th floor of the North Tower during the middle of the night. Spreading through floor openings in the utility closets, it caused damage from the 10th to 19th floors, though this was generally confined to the utility closets. However, on the 11th floor about 9,000 square feet was damaged. This was about 21 percent of the floor’s total area (43,200 square feet) and took weeks to repair. Some parts of the steel trusses (floor supports) buckled due to the heat. 132 firefighters were called to the tower in response, and because the fire was so hot, many got their necks and ears burned. Fire Department Captain Harold Kull described the three-hour effort to extinguish it as “like fighting a blowtorch.” [WTC Environmental Assessment Working Group, 9/2002, pp. 10 pdf file; New York Times, 5/8/2003; Glanz and Lipton, 2004, pp. 213, 214, 324; Kuligowski, Evans, and Peacock, 9/2005, pp. 1] An article in Fire Engineering magazine will later summarize, “[A]lmost all large buildings will be the location for a major fire in their useful life. No major high-rise building has ever collapsed from fire. The WTC was the location for such a fire in 1975; however, the building survived with minor damage and was repaired and returned to service.” [Fire Engineering, 10/2002] Building 7 of the WTC, which completely collapses late in the afternoon on 9/11, has also suffered a ‘significant’ fire in 1988, occurring on its third floor, with multiple sprinklers being activated. [Kuligowski, Evans, and Peacock, 9/2005, pp. 12]

Entity Tags: World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

The Saudi Arabia Royal Consulate in Los Angeles.The Saudi Arabia Royal Consulate in Los Angeles. [Source: InfoUSA]According to Sen. Bob Graham (D-FL), co-chair of the 9/11 Congressional Inquiry, during this time Omar al-Bayoumi has an “unusually large number of telephone calls with Saudi government officials in both Los Angeles and Washington.” Graham will note this increased communication corresponds with the arrival of hijackers Nawaf Alhazmi and Khalid Almihdhar into al-Bayoumi’s life. He will see this as evidence of Saudi government involvement in the 9/11 plot. [Graham and Nussbaum, 2004, pp. 168-169] An FBI report obtained by the Intelwire.com website in 2008 will specify that from January through May 2000, al-Bayoumi calls the Saudi embassy in Washington 32 times, the Saudi Cultral Mission in Washington 37 times, and the Saudi consulate in Los Angeles 24 times. [Federal Bureau of Investigation, 4/15/2002 pdf file] Al-Bayoumi is in contact with Fahad al Thumairy during this time, and the two call each other’s private phone numbers many times (see December 1998-December 2000). Al Thumairy is an official at the Saudi consulate in Los Angeles and a known Islamic radical (see January 15-February 2000).

Entity Tags: Omar al-Bayoumi, Khalid Almihdhar, Federal Bureau of Investigation, Daniel Robert (“Bob”) Graham, Nawaf Alhazmi, Fahad al Thumairy

Timeline Tags: Complete 911 Timeline

Category Tags: Alhazmi and Almihdhar, 9/11 Investigations, 9/11 Congressional Inquiry, Bayoumi and Basnan Saudi Connection

Historian Ernest May.Historian Ernest May. [Source: Belfer Center]An eminent historian finds serious flaws in a historical treatise about former President John F. Kennedy. The book, The Kennedy Tapes: Inside the White House During the Cuban Missile Crisis, was written in 1997 by conservative historians Ernest May and Philip D. Zelikow, and purports to be an unprecedentedly accurate representation of the events of 1962’s Cuban Missile Crisis based on transcriptions of recorded meetings, conferences, telephone conversations, and interviews with various participants. [Atlantic Monthly, 5/2000] Zelikow is a former member of George H. W. Bush’s National Security Council and a close adviser to future National Security Adviser Condoleezza Rice. [US Department of State, 8/5/2005] May is a Harvard professor. Both will participate heavily in the creation of the 2004 report by the 9/11 Commission. [Shenon, 2008, pp. 387-393] Almost three years after the Kennedy book’s publication, Sheldon M. Stern, the historian for the John F. Kennedy Library from 1977 through 1999, pores over it and the May/Zelikow transcripts. In the original edition, May and Zelikow admitted that their final product was not perfect: “The reader has here the best text we can produce, but it is certainly not perfect. We hope that some, perhaps many, will go to the original tapes. If they find an error or make out something we could not, we will enter the corrections in subsequent editions or printings of this volume.” But when Stern checks the book against the tapes, he finds hundreds of errors in the book, some quite significant. Stern concludes that the errors “significantly undermine [the book’s] reliability for historians, teachers, and general readers.” May and Zelikow have corrected a few of the errors in subsequent editions, but have not publicly acknowledged any errors. Stern concludes, “Readers deserve to know that even now The Kennedy Tapes cannot be relied on as an accurate historical document.” [Atlantic Monthly, 5/2000] One error has then-Attorney General Robert F. Kennedy talking about the planned “invasion” of Russian ships heading to Cuba, when the tapes actually show Kennedy discussing a far less confrontational “examination” of those vessels. May and Zelikow imply that the Kennedy administration was discussing just the kind of confrontation that it was actually trying to avoid. Another error has CIA Director John McCone referring to the need to call on former President Dwight D. Eisenhower as a “facilitator,” where McCone actually said “soldier.” May and Zelikow will be rather dismissive of Stern’s findings, saying that “none of these amendments are very important.” Stern will express shock over their response, and respond, “When the words are wrong, as they are repeatedly, the historical record is wrong.” [Shenon, 2008, pp. 42]

Entity Tags: Kennedy administration, Philip Zelikow, John F. Kennedy, Sheldon M. Stern, Robert F. Kennedy, Ernest May, John A. McCone, 9/11 Commission, George Herbert Walker Bush, Condoleezza Rice, Dwight Eisenhower

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, 9/11 Commission, Role of Philip Zelikow

Future 9/11 Commission Executive Director Philip Zelikow is not offered a job in the Bush administration, and returns to the Miller Center of Public Affairs at the University of Virginia to teach. Zelikow had worked on the transition team (see January 3, 2001), and thought he would receive an important position in the new administration. He told his friends he thought he was in line for the position of deputy national security adviser to Condoleezza Rice, with whom he had written a book in the mid-1990s (see 1995). Most people in the Bush administration admire his ability, but find him hard to work with. White House Chief of Staff Andrew Card will even describe Zelikow as a “bully” historian. Author Philip Shenon will later comment that Zelikow is “perplexed that his talents had not been recognized by the people who handed out the best jobs in the Bush administration.” After returning to university, Zelikow will lobby the White House to make the university where he works the official repository of its oral history. His point of contact at the White House is political adviser Karl Rove. [Shenon, 2008, pp. 42-44]

Entity Tags: Andrew Card, Karl C. Rove, Philip Shenon, Philip Zelikow

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Commission, Role of Philip Zelikow

Condoleezza Rice and Philip Zelikow.Condoleezza Rice and Philip Zelikow. [Source: Public domain]National Security Adviser Rice decides this day to retain Richard Clarke, counterterrorism “tsar” for the Clinton administration, and his staff. However, she downgrades his official position as National Coordinator for Counterterrorism. While he is still known as the counterterrorism “tsar,” he has less power and now reports to deputy secretaries instead of attending Cabinet-level meetings. He no longer is able to send memos directly to the president, or easily interact with Cabinet-level officials. [Clarke, 2004, pp. 227-30; Guardian, 3/25/2004] Clarke will not be able to meet with President Bush even a single time before 9/11 to discuss al-Qaeda (see January 25, 2001-September 10, 2001). In 2004, Rice will reveal that the person she tasks with considering changes to Clarke and his staff is Philip Zelikow, the future Executive Director of the 9/11 Commission. Zelikow recuses himself from those parts of the 9/11 Commission’s investigation directly relating to his role in this and other matters. However, 9/11 victims’ relatives are not satisfied. For instance, one relative says, “Zelikow has conflicts. I’m not sure that his recusal is sufficient. His fingerprints are all over that decision [to demote Clarke].” [United Press International, 4/9/2004]

Entity Tags: Philip Zelikow, Richard A. Clarke, Condoleezza Rice

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Commission, Role of Philip Zelikow, Counterterrorism Policy/Politics

Frank De Martini.Frank De Martini. [Source: New York Times]Frank De Martini, an architect who works as the World Trade Center’s construction manager, is interviewed for a History Channel documentary about the WTC towers. He says, “I believe the building probably could sustain multiple impacts of jetliners because this structure is like the mosquito netting on your screen door, this intense grid, and the jet plane is just a pencil puncturing the screen netting. It really does nothing to the screen netting.” [Dwyer and Flynn, 2005, pp. 149] De Martini will be in his office on the 88th floor of the North Tower when it is hit on 9/11. He will die when the tower collapses, after helping more than 50 people escape. [Associated Press, 8/29/2003; New York Times, 8/29/2003]

Entity Tags: Frank De Martini, World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: WTC Investigation, 9/11 Investigations

A property risk assessment report is prepared for Silverstein Properties before it acquires the lease for the World Trade Center (see July 24, 2001). It identifies the scenario of an aircraft hitting one of the WTC towers as one of the “maximum foreseeable losses.” The report says, “This scenario is within the realm of the possible, but highly unlikely.” Further details of the assessment, such as who prepared it, are unreported. [National Institute of Standards and Technology, 5/2003, pp. 16 pdf file; Barrett and Collins, 2006, pp. 189; American Prospect, 9/1/2006]

Entity Tags: Silverstein Properties, World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Related Lawsuits, WTC Investigation, 9/11 Investigations

Larry Silverstein.
Larry Silverstein. [Source: Silverstein Properties publicity photo]Real estate development and investment firm Silverstein Properties and real estate investment trust Westfield America Inc. finalize a deal worth $3.2 billion to purchase a 99-year lease on the World Trade Center. The agreement covers the Twin Towers, World Trade Center Buildings 4 and 5 (two nine-story office buildings), and about 425,000 square feet of retail space. [New York Times, 4/27/2001; Port Authority of New York and New Jersey, 7/24/2001; IREIzine, 7/26/2001] Westfield America Inc. will be responsible for the retail space, known as the Mall. Silverstein Properties’ lease will cover the roughly 10 million square feet of office space of the Twin Towers and Buildings 4 and 5. Silverstein Properties already owns Building 7 of the WTC, which it built in 1987. This is the only time the WTC has ever changed hands since it was opened in 1973. [International Council of Shopping Centers, 4/27/2001; Westfield Group, 7/24/2001; Daily Telegraph, 9/11/2001; New York Times, 11/29/2001; CNN, 8/31/2002] It was previously controlled by the New York Port Authority, a bi-state government agency. [Wall Street Journal, 5/12/2007] Silverstein and Westfield are given the right to rebuild the structures if they are destroyed. [New Yorker, 5/20/2002]
Silverstein Properties Not the Highest Bidder - Silverstein Properties’ bid for the WTC, at $3.22 billion, was the second highest after Vornado Realty Trust’s, at $3.25 billion. Silverstein Properties won the contract only after protracted negotiations between the Port Authority and Vornado Realty Trust failed. The privatization of the WTC has been overseen by Lewis M. Eisenberg, the chairman of the Port Authority. Eisenberg, a financier, is involved in Republican politics. [New York Times, 3/17/2001; Forward, 8/20/2004]
Banks Provide Most Money for Deal - Larry Silverstein, the president of Silverstein Properties, only uses $14 million of his own money for the deal. His partners, who include real estate investors Lloyd Goldman and Joseph Cayre, put up a further $111 million, and banks provide $563 million in loans. [Brill, 2003, pp. 156; New York Times, 11/22/2003; South Florida CEO, 2/2005; Wall Street Journal, 9/11/2008]
Silverstein's Lenders Want More Insurance - The Port Authority had carried only $1.5 billion in insurance coverage on all its buildings, including the WTC, but Silverstein’s lenders insist on more, eventually demanding $3.55 billion in cover. [American Lawyer, 9/3/2002] After 9/11, Larry Silverstein will claim the attacks on the World Trade Center constituted two separate events, thereby entitling him to a double payout totaling over $7 billion. [Daily Telegraph, 10/9/2001; Guardian, 8/18/2002] Eventually, after several years of legal wrangling, a total of $4.55 billion of insurance money will be paid out for the destruction of the WTC (see May 23, 2007). Most of this appears to go to Silverstein Properties. How much goes to Westfield America Inc. is unclear. [New York Post, 5/24/2007]

Entity Tags: Vornado Realty Trust, Larry Silverstein, Joseph P. Cayre, Lewis M. Eisenberg, Lloyd Goldman, Port Authority of New York and New Jersey, Westfield America, World Trade Center, Silverstein Properties

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits

Alan Reiss.Alan Reiss. [Source: Eric Weeks]In the first week of September 2001, the real estate development and investment firm Silverstein Properties assumes control of the World Trade Center. The company had acquired the lease to operate the Twin Towers from the New York Port Authority in late July (see July 24, 2001). It has already begun managing the facility with its own executives. Selected Port Authority employees, including Alan Reiss, the director of the World Trade Center, have been assisting the firm during a three-month transition period. But in the weeks prior to 9/11, according to the New York Times, “Silverstein Properties asked Mr. Reiss to let it more fully operate everything from safety systems to tenant relations.” [New York Times, 9/13/2001; New York Times, 10/14/2001; Weiss, 2003, pp. 338; 9/11 Commission, 11/3/2003; 9/11 Commission, 5/18/2004 pdf file]

Entity Tags: Alan Reiss, Silverstein Properties, World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits, 9/11 Investigations, WTC Investigation, 9/11 Related Lawsuits

Leslie Robertson.Leslie Robertson. [Source: Publicity photo]Leslie Robertson, one of the two original structural engineers for the World Trade Center, is asked at a conference in Frankfurt, Germany what he had done to protect the Twin Towers from terrorist attacks. He replies, “I designed it for a 707 to smash into it,” though does not elaborate further. [Chicago Tribune, 9/12/2001; Knight Ridder, 9/12/2001] The Twin Towers were in fact the first structures outside the military and nuclear industries designed to resist the impact of a jet airplane. [Robertson, 3/2002; Federal Emergency Management Agency, 5/1/2002, pp. 1-17] The Boeing 707 was the largest in use when the towers were designed. Robertson conducted a study in late 1964, to calculate the effect of a 707 weighing 263,000 pounds and traveling at 180 mph crashing into one of the towers. He concluded that the tower would remain standing. However, no official report of his study has ever surfaced publicly. [Glanz and Lipton, 2004, pp. 138-139, 366] A previous analysis, carried out early in 1964, calculated that the towers would handle the impact of a 707 traveling at 600 mph without collapsing (see February 27, 1993). In 2002, though, Robertson will write, “To the best of our knowledge, little was known about the effects of a fire from such an aircraft, and no designs were prepared for that circumstance.” [Robertson, 3/2002] The planes that hit the WTC on 9/11 are 767s, which are almost 20 percent heavier than 707s. [Scientific American, 10/9/2001; New Yorker, 11/19/2001]

Entity Tags: Leslie Robertson, World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

Former FBI counterterrorism chief John O’Neill recently started his new job as director of security at the World Trade Center (see August 23, 2001). From the outset, he has engrossed himself in discovering what security systems are in place there, and what will be needed in future. On this day, he runs into Rodney Leibowitz, a friend of his, and complains to him about the very poor standard of security at the Twin Towers. For instance, he mentions that, even though the complex receives bomb threats on a daily basis, its telephone system does not feature caller identification. [Weiss, 2003, pp. 354 and 358] The Trade Center has in fact recently been on a heightened security alert, due to numerous phone threats (see Late August-September 10, 2001). [Newsday, 9/12/2001] Leibowitz is the president and CEO of a company called First Responder Inc., which provides bioterrorism preparedness training to healthcare professionals. [First Responder Inc., 1/14/2004 pdf file] Until the 9/11 attacks intervene, First Responder Inc. is in fact scheduled to send in a team to conduct a threat assessment of the World Trade Center for O’Neill on September 15. [Swanson, 2003, pp. 52]

Entity Tags: John O’Neill, First Responder Inc., World Trade Center, Rodney Leibowitz

Timeline Tags: Complete 911 Timeline

Category Tags: Counterterrorism Policy/Politics, 9/11 Investigations, WTC Investigation

Douglas Karpiloff.Douglas Karpiloff. [Source: Port Authority of New York and New Jersey]A command center for the Port Authority of New York and New Jersey, located in the North Tower of the World Trade Center, is upgraded to make it more secure, and the improvements will reportedly save the lives of people in the command center when the nearby South Tower collapses on September 11. [Newsday, 9/12/2001; Civil Air Patrol News, 1/2002; Newsday, 1/23/2002] The Port Authority’s Security Command Center (SCC) is on the 22nd floor of the North Tower. [9/11 Commission, 5/18/2004 pdf file; 9/11 Commission, 7/24/2004, pp. 294] Newsday will report, on the day after 9/11, that officials had “recently” increased security at the WTC “by installing bulletproof windows and fireproof doors in the 22nd-floor computer command center.” [Newsday, 9/12/2001] According to George Tabeek, the Port Authority’s security manager for the WTC, by September 11, the WTC in fact has “bulletproof window glass in most areas.” [FDU Magazine, 6/2008] The installation of the bulletproof windows—and presumably, also, the fireproof doors—in the SCC is made at the request of Douglas Karpiloff, the Port Authority’s director of security and life safety for the WTC. [Newsday, 1/23/2002]
Upgrades Intended to Protect against 'Aerial Attacks' - According to Hermina Jones, a security guard at the WTC, the upgrades to the SCC are intended “to secure the towers against aerial attacks.” [Newsday, 9/12/2001] Tabeek will later recall, “We had planned for the possibility of a small airplane—a corporate jet, maybe—crashing into one of the [WTC] buildings by accident,” although it is unclear if this comment is made in reference to the installation of bulletproof windows at the WTC. [FDU Magazine, 6/2008]
Security Improvements Save Lives on September 11 - Some people will credit the upgrades to the SCC with saving their lives on September 11. Tabeek will be in the SCC that day when the first of the Twin Towers—the South Tower—collapses (see 9:59 a.m. September 11, 2001). When that happens, according to Tabeek, the “impact of the explosion peeled off the outer skin of [the North Tower], shattering the thick double-paned windows [of the SCC] in the process.” Tabeek will say, however, that the “inner layer of laminated bulletproof glass put in months earlier… withstood the blast and undoubtedly saved his life and those of the others with him.” Victor Guarnera, the chief technical adviser and manager of security systems for the World Trade Department, who is also in the SCC at that time, will describe what happens when the collapse occurs, saying, “The outer windows [of the SCC] exploded, either from impact [of debris from the South Tower] or differential pressure, but the inner window wall of high-tempered bomb and bullet-resistant glass we had installed a few months before held fast.” Guarnera will comment that the bulletproof windows “were responsible for our survival up to that point.” [Civil Air Patrol News, 1/2002; Newsday, 1/23/2002]

Entity Tags: Douglas G. Karpiloff, World Trade Center, George Tabeek, Hermina Jones, Port Authority of New York and New Jersey

Timeline Tags: Complete 911 Timeline

Category Tags: Counterterrorism Policy/Politics, 9/11 Investigations, WTC Investigation

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: Complete 911 Timeline

Category Tags: All Day of 9/11 Events, WTC Investigation, 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: Complete 911 Timeline

Category Tags: All Day of 9/11 Events, Flight AA 11, Flight UA 175, George Bush, WTC Investigation, 9/11 Investigations, Key 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 World Trade Center 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 upstairs with a co-worker toward a small machine shop on the C level. Yet, he will later recall: “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 WTC 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,” he will describe. “The marble was missing off some of the walls. Twenty-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 will say 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: World Trade Center, Mike Pecoraro

Timeline Tags: Complete 911 Timeline

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

Satam Al Suqami’s remarkably undamaged passport, marked and wrapped in plastic. It is shown as evidence in the 2006 Zacarias Moussaoui trial.Satam Al Suqami’s remarkably undamaged passport, marked and wrapped in plastic. It is shown as evidence in the 2006 Zacarias Moussaoui trial. [Source: FBI]The passport of 9/11 hijacker Satam Al Suqami is reportedly found a few blocks from the World Trade Center. [ABC News, 9/12/2001; Associated Press, 9/16/2001; ABC News, 9/16/2001] Barry Mawn, the director of the FBI’s New York office, will say that police and the FBI found it during a “grid search” of the area. [CNN, 9/18/2001] However, according to the 9/11 Commission, the passport is actually discovered by a male passer-by who is about 30 years old and wearing a business suit. The man gives it to New York City Police Department Detective Yuk H. Chin shortly before 9:59 a.m., when the South Tower of the WTC collapses. The man leaves before he is identified. Chin, according to the 9/11 Commission, will give the passport to the FBI later in the day. [9/11 Commission, 1/26/2004; 9/11 Commission, 8/21/2004, pp. 40 pdf file] An FBI timeline concerned with the 9/11 hijackers will state that the passport is found by a civilian “on the street near [the] World Trade Center,” and is “soaked in jet fuel.” [Federal Bureau of Investigation, 10/2001, pp. 291 pdf file] According to FBI agent Dan Coleman, Al Suqami’s passport is handed to a New York City detective who is “down there, trying to talk to people as they were coming out of the buildings.” By the time the detective looks up again after receiving the passport, the man who handed it to him has run off, “which doesn’t make sense,” Coleman will say. The passport is then given to a detective on the Joint Terrorism Task Force. Coleman will say that by this evening, “we realized… that this was the passport of one of the people that headquarters had identified as one of the 19 probable hijackers.” [France 5, 3/14/2010] Investigative journalist Nick Davies will later write that he talked to “senior British sources who said they believed that the discovery of a terrorist’s passport in the rubble of the Twin Towers in September 2001 had been ‘a throwdown,’ i.e. it was placed there by somebody official.” [Davies, 2009, pp. 248] The Guardian will comment, “The idea that Mohamed Atta’s passport had escaped from that inferno unsinged [tests] the credulity of the staunchest supporter of the FBI’s crackdown on terrorism.” (Note that, as in this Guardian account, the passport will frequently be mistakenly referred to as belonging to Atta, not Al Suqami.) [Guardian, 3/19/2002]

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: Complete 911 Timeline

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

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Category Tags: All Day of 9/11 Events, Flight AA 77, Flight UA 175, Flight UA 93, George Bush, 9/11 Investigations, WTC Investigation, Key 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

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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

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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

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Shortly before Flight 77 hits the Pentagon, Washington’s Dulles Airport, from where it had departed, is “locked down” by the FAA, and many FBI and INS agents arrive, but their behavior is considered odd. Ed Nelson, a security manager at the airport, thinks something is not “adding up,” due to the unusual questions his employees are being asked: “They were not asking about the hijackers—they were focusing on what my screeners might have done wrong. It was as if they were working off a script.” FBI agents will later confirm this, and an FBI supervisor will say: “The orders came from headquarters through the local Washington-area FBI field offices and the Joint Task Force on Terrorism. The teams of agents were told to ‘get the screeners to admit they had violated FAA recommended procedures.’” [Trento and Trento, 2006, pp. 36]

Entity Tags: Federal Bureau of Investigation, Ed Nelson

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Royce Lamberth, head of the FISA court which grants warrants for intelligence cases, grants five warrantless surveillance requests minutes after the Pentagon attack. Lamberth will later report being stuck in a carpool lane near the Pentagon when it is hit. With his car enveloped in smoke, he calls US marshals to help him get to his office. Lamberth will later say that by the time officers reached him, “I had approved five FISA coverages [warrants] on my cellphone.” [Associated Press, 6/24/2007] Presumably this represents the start of a flurry of surveillance activity in response to the 9/11 attacks, but it is not known who was to be monitored or how their names were learned and acted on so quickly.

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Logo of the FBI’s National Capital Response Squad.Logo of the FBI’s National Capital Response Squad. [Source: FBI]Within five minutes of the Pentagon being hit, the first group from the FBI’s National Capital Response Squad arrives there. Due to this being a terrorist attack, the Pentagon and its grounds are immediately declared a federal crime scene. Under the terms of a 1995 presidential directive, this makes them the exclusive responsibility of the FBI. The FBI immediately begins collecting evidence and is also responsible for recovering bodies. Its agents are able to confiscate security videos from a nearby gas station within minutes of the crash (see (After 9:37 a.m.) September 11, 2001). More than 700 FBI agents, assisted by hundreds of individuals from other organizations, will participate in the recovery operation. [US President, 6/21/1995; Washington Times, 9/12/2001; US Department of Health and Human Services, 7/2002, pp. A-7, A-23, C-1, C-54 pdf file]

Entity Tags: Federal Bureau of Investigation, Pentagon

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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

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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

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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]

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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

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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

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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).

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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

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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

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

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

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

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

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Category Tags: All Day of 9/11 Events, Flight UA 175, George Bush, WTC Investigation, 9/11 Investigations, Key Day of 9/11 Events, World Trade Center

Shortly after arriving at Washington’s Dulles Airport, from which Flight 77 took off, the FBI confiscates a security tape from a checkpoint through which the hijackers passed before boarding the plane. Airport security manager Ed Nelson will later say: “They pulled the tape right away.… They brought me to look at it. They went right to the first hijacker on the tape and identified him. They knew who the hijackers were out of hundreds of people going through the checkpoints. They would go ‘roll and stop it’ and showed me each of the hijackers.… It boggles my mind that they had already had the hijackers identified.… Both metal detectors were open at that time, and lots of traffic was moving through. So picking people out is hard.… I wanted to know how they had that kind of information. So fast. It didn’t make sense to me.” [Trento and Trento, 2006, pp. 37] Some of the hijackers are identified on the passenger manifests around this time (see (9:59 a.m.) September 11, 2001), and this knowledge is disseminated in the US intelligence community (see (After 10:06 a.m.) September 11, 2001 and (11:00 a.m.) September 11, 2001).

Entity Tags: Ed Nelson, Federal Bureau of Investigation

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Category Tags: Alhazmi and Almihdhar, Hani Hanjour, Other 9/11 Hijackers, All Day of 9/11 Events, FBI 9/11 Investigation, 9/11 Investigations

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

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

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

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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

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

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

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

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

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

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

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Damage to World Trade Center Building 7.
Damage to World Trade Center Building 7. [Source: New York City Police Department]Firefighters notice significant damage to World Trade Center Building 7 at some point after the Twin Towers collapsed. Butch Brandies tells other firefighters that nobody is to go into WTC 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 will recall, “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 say, “On the south side of [WTC] 7 there had to be a hole 20 stories tall in the building, with fire on several floors.” [Firehouse Magazine, 9/9/2002] One witness will describe looking at the south face of the building and seeing “broken windows, damage to the building, I-beams sticking out.” Another witness will describe seeing 10 to 15 floors where “the corner I-beam was missing,” and add that “there were more floors that had damage throughout the front facade of the building and several floors were completely exposed.” [Aegis Insurance Services, Inc. v. 7 World Trade Center Company, LP, 12/4/2013 pdf file] Richard Rotanz, the deputy director of New York’s Office of Emergency Management, assesses the condition of WTC 7 at around 12:30 p.m. “We’re looking at the upper floors of Tower 7,” he will recall. “The skin of the building or the outside skirt of the building was taken out,” he will say. “You could see columns gone, floors collapsed, heavy smoke coming out, and fire.” [BBC, 7/6/2008; BBC, 10/17/2008] WTC 7 will collapse at around 5:20 p.m. (see (5:20 p.m.) September 11, 2001). [National Institute of Standards and Technology, 9/2005, pp. 111]

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

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

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

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One day after 9/11, the New York Times will report that FBI agents in Florida investigating the hijackers quickly “descended on flight schools, neighborhoods and restaurants in pursuit of leads.” At one flight school, “students said investigators were there within hours of Tuesday’s attacks.” [New York Times, 9/13/2001] Also on September 12, the Times will report, “Authorities said they had also identified accomplices in several cities who had helped plan and execute Tuesday’s attacks. Officials said they knew who these people were and important biographical details about many of them. They prepared biographies of each identified member of the hijack teams, and began tracing the recent movements of the men.” [New York Times, 9/13/2001] In September 2002, 9/11 victim’s relative Kristen Breitweiser, testifying before the 9/11 Congressional Inquiry, will cite these news reports and will ask, “How did the FBI know exactly where to go only a few hours after the attacks? How did they know which neighborhoods, which flight schools and which restaurants to investigate so soon in the case?… How are complete biographies of the terrorists, and their accomplices, created in such short time? Did our intelligence agencies already have open files on these men? Were they already investigating them? Could the attacks of September 11th been prevented?” [US Congress, 9/18/2002] In at least some cases, it appears that US intelligence did quickly access existing files on the hijackers. The Washington Post reports, “In the hours after Tuesday’s bombings, investigators searched their files on [Satam] Al Suqami and [Ahmed] Alghamdi, noted the pair’s ties to [Nabil] al-Marabh and launched a hunt for him.” A top Customs official claims that by checking flight manifests and comparing them with other information such as watch lists, he is able to determine the names of all 19 hijackers by 11:00 a.m.(see (11:00 a.m.) September 11, 2001). [Washington Post, 9/21/2001]

Entity Tags: Federal Bureau of Investigation, Ahmed Alghamdi, Satam Al Suqami, Kristen Breitweiser, Nabil al-Marabh

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Category Tags: 9/11 Investigations, FBI 9/11 Investigation

Personnel from several agencies searching for evidence at the Pentagon.Personnel from several agencies searching for evidence at the Pentagon. [Source: Federal Bureau of Investigation]Beginning shortly before midday on September 11, 2001, and continuing until September 12, the FBI conducts a careful search across the grounds of the Pentagon, looking for remnants of the aircraft that hit the building. [PBS, 9/12/2001; Washington Post, 9/12/2001; Goldberg et al., 2007, pp. 159] FBI Special Agent Tom O’Connor is in charge of the initial evidence recovery operation at the Pentagon. His first priority is to locate and gather all the airplane parts and other pieces of evidence from the lawn on the west side of the building. He sends out all available agents to conduct a grid search. The lawn is divided into quadrants, and then agents walk back and forth, sticking a small flag near any evidence they find, getting the evidence photographed in its place, and then scooping it into a bag. [Creed and Newman, 2008, pp. 180] Arlington police officers, military personnel, and others also participate in the search. [Goldberg et al., 2007, pp. 159] They also look for evidence across grass and roadways several hundred yards from the Pentagon. [PBS, 9/12/2001] Some pieces of the aircraft that hit the Pentagon are found nearly 1,000 feet away from the building, on the other side of Washington Boulevard. Thousands of tiny pieces of aluminum have also carried forward over the Pentagon, into its center courtyard. Other pieces of debris landed on its roof, along with body parts from at least one victim. [Creed and Newman, 2008, pp. 29] According to the Defense Department’s book about the Pentagon attack, the searchers find “many scraps and a few personal items widely scattered on the grass and heliport. Plane remnants varied from half-dollar size to a few feet long.” [Goldberg et al., 2007, pp. 159] Authors Patrick Creed and Rick Newman will describe: “Agents found what looked like a big Plexiglas windowpane on the lawn, which might have been part of an airplane window, except it was too big.… Somebody suggested it could be one of the blast-proof windows from the Pentagon, somehow blown 500 feet from the building.” [Creed and Newman, 2008, pp. 180]

Entity Tags: Tom O’Connor, Arlington County Police Department, Federal Bureau of Investigation

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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

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Due to the chaos and gridlock resulting from the morning’s attacks, the FBI is hampered in mobilizing its investigative operation at the Pentagon. Because the Pentagon is a crime scene, it is the FBI’s job to gather and document every piece of evidence there. [Creed and Newman, 2008, pp. 177] Special Agent Chris Combs, the FBI’s representative at the crash site, has been setting up the FBI operation since arriving at 9:49 a.m. [US Department of Health and Human Services, 7/2002, pp. A20 and 1-1 pdf file; Creed and Newman, 2008, pp. 178] Since before 10:00 a.m., the bureau’s evidence recovery team has been arriving. But although every available agent has been paged, many are stuck in traffic, and it will take several hours before the entire FBI contingent makes it to the Pentagon. The FBI also has a fleet of sophisticated command vehicles and helicopters, plus other specialized equipment. But even though the crash site is within the “FBI’s backyard,” according to authors Patrick Creed and Rick Newman, by around 12:15 p.m. none of this has arrived yet. The bureau’s rapid-deployment gear, which includes everything needed to gather and document evidence, is stored in a warehouse in Washington, DC. But with traffic in the region at a standstill, it is almost impossible to get this through the streets to the Pentagon. Chris Combs asks his boss at the FBI’s Washington field office if any helicopters are available to get equipment to the Pentagon quickly. But several choppers at the FBI facility in Quantico, just 30 miles south of the Pentagon, are reserved for specific duties during government emergencies and are currently locked down. And according to Creed and Newman, other government helicopters the bureau relies upon for backup are tied up, though what they are being used for is unstated. [US Department of Health and Human Services, 7/2002, pp. A22 pdf file; Creed and Newman, 2008, pp. 177-179] Furthermore, NBC News has reported that the FBI’s top teams have been away from Washington for the last two days for a major training exercise in California (see 10:03 a.m. September 11, 2001). This means about 50 personnel, plus helicopters and equipment, are currently out of place and unavailable. [NBC 4, 9/11/2001]

Entity Tags: Federal Bureau of Investigation, Chris Combs

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Garrett McKenzie.Garrett McKenzie. [Source: Rudi Williams]Photographers who are taking pictures at the Pentagon, to document the scene of the attack there in as close as possible to its original state, are told to limit what evidence they photograph. FBI Special Agent Tom O’Connor—who is in charge of the initial evidence recovery operation at the Pentagon—and his superiors have put out the word that it is unnecessary to document every piece of the airplane. This is because, reportedly, “the smaller fragments didn’t prove anything, except that there was an airplane there, which was obvious enough from other evidence.” FBI Special Agent Garrett McKenzie, who is coordinating the effort to photograph evidence at the Pentagon, pulls together a dozen photographers for a briefing. He instructs them: “We don’t need to photograph all the plane parts, only unique airplane parts or something specific. Like the pilot’s yoke, or anything with part of a serial number on it. If we have to prove what kind of plane this was, the serial numbers will be what we need.” [Creed and Newman, 2008, pp. 181-183]

Entity Tags: Tom O’Connor, Garrett McKenzie

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Category Tags: All Day of 9/11 Events, Pentagon, FBI 9/11 Investigation

The Navy Annex, located next to the Virginia State Police Barracks.The Navy Annex, located next to the Virginia State Police Barracks. [Source: Arlington County After-Action Report]The FBI establishes a command post for its response to the Pentagon attack at the Virginia State Police Barracks, overlooking the Pentagon. [Fire Engineering, 11/2002] Around midday, Assistant Special Agent in Charge Robert Blecksmith arrived at the Pentagon and took over from Special Agent Chris Combs as the FBI’s on scene commander. He had quickly decided that the area around the Arlington County Fire Department’s incident command post by the Pentagon was too crowded and lacked support facilities. He therefore decides it will be safer for the FBI to carry out its operations at the Virginia State Police Barracks, located next to the Navy Annex, a few hundred yards from the Pentagon. Along with Combs, Blecksmith establishes the FBI’s command post there, and starts moving the FBI up to it. The two men will spend most of the afternoon at the barracks, where they work on establishing a Joint Operations Center (JOC) at nearby Fort Myer. [US Department of Health and Human Services, 7/2002, pp. A23 and C50 pdf file; Creed and Newman, 2008, pp. 178] The JOC will open early the following morning (see September 12, 2001). [Goldberg et al., 2007, pp. 161]

Entity Tags: Chris Combs, Federal Bureau of Investigation, Robert Blecksmith

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Deena Burnett is visited at her home in San Ramon, California, by three FBI agents, and questioned about the calls she received from her husband, Tom Burnett, who was a passenger on Flight 93. Deena has now learned of the plane crashing in Pennsylvania, and a police officer staying with her informed her that this was her husband’s plane. The FBI agents spend over an hour with Deena, asking her about her husband and what he’d said in his four calls from Flight 93. [Burnett and Giombetti, 2006, pp. 71-72 and 74-75] She describes to them how Tom called her using his cell phone and told her his flight had been hijacked. In his final call he’d described how a group of the passengers was going to “do something.” She says her husband was a former college football player and very intelligent, so if he’d concluded he was going to die, he would have taken action. [Federal Bureau of Investigation, 9/11/2001 pdf file] Deena remembers that she’d taken notes, writing down the details of her husband’s calls. But she does not want the agents to have these, saying, “You wouldn’t be able to read it anyway.” They do not take the notes with them when they leave. They will return later in the day and tell Deena specifically not to say anything to anyone—especially the media—about her cell phone conversations with her husband, because it is part of their investigation. [Burnett and Giombetti, 2006, pp. 75 and 81]

Entity Tags: Tom Burnett, Deena Burnett, Federal Bureau of Investigation

Timeline Tags: Complete 911 Timeline

Category Tags: All Day of 9/11 Events, Alleged Passenger Phone Calls, FBI 9/11 Investigation

The FBI interviews Eric Gill, a security guard at Dulles Airport who may have encountered some of the 9/11 hijackers attempting to access aircraft the night before 9/11 (see Around 8:15 p.m. September 10, 2001). Gill tells the FBI his story, but the FBI fails to show him a video it has found of the hijackers passing through an airport security checkpoint on 9/11, even though it is shown to all his colleagues, except the partner he was on duty with when he saw the hijackers. The FBI also obtains video of two of the hijackers, Khalid Almihdhar and Salem Alhazmi, at Dulles on the day he says he saw another two of them, Nawaf Alhazmi and Marwan Alshehhi, but does not show this video to him and this video will not be publicly mentioned until 2008. It is unclear what the FBI does with logs for a door through which Gill says the hijackers would have passed, but they are not shown to Gill. Two days later, the FBI shows him poor quality photocopied pictures of the hijackers and Gill identifies two of them as the people he saw on September 10, but the FBI then loses interest in him, as they think one of the men he identifies hijacked a plane from Boston, not Dulles. Another man who may have seen the hijackers the night before 9/11, Khalid Mahmoud, is taken away by the INS and does not return, presumably because he has been deported. Gill will speak to a 9/11 Commission staffer on the telephone about 18 months later, but nothing will come of this. [Federal Bureau of Investigation, 10/2001, pp. 281 pdf file; Trento and Trento, 2006, pp. 38-40, 43-5]

Entity Tags: Marwan Alshehhi, Khalid Mahmoud, Eric Gill, US Immigration and Naturalization Service, Federal Bureau of Investigation

Timeline Tags: Complete 911 Timeline

Category Tags: FBI 9/11 Investigation, 9/11 Investigations, All Day of 9/11 Events, Alhazmi and Almihdhar, Marwan Alshehhi

On September 11—after the 9/11 attacks are over—the New York FBI office learns that one of the hijackers was Khalid Almihdhar. One of the FBI agents at the office, Steve Bongardt, had attempted to get permission to search for Almihdhar in late August, but was not allowed to do so. He wrote an e-mail on August 29 (see August 29, 2001) predicting that “someday someone will die… the public will not understand why we were not more effective and throwing every resource we had at certain ‘problems.’” He will later testify that upon seeing Almihdhar’s name on one of the passenger flight manifests, he angrily yells, “This is the same Almihdhar we’ve been talking about for three months!” In an attempt to console him, his boss replies, “We did everything by the book.” Now that Bongardt is allowed to conduct a basic Internet search for Almihdhar that he had been denied permission to conduct before 9/11, he finds the hijacker’s address “within hours.” [Washington Post, 9/21/2002; US Congress, 12/11/2002] The FBI field office in San Diego also was not notified before 9/11 that Almihdhar and Nawaf Alhazmi had been put on a no-fly watch list on August 24, 2001 (see September 4-5, 2001). Bill Gore, the FBI agent running the San Diego office on this day, will later make reference to the fact that Alhazmi’s correct phone number and address were listed in the San Diego phone book, and say: “How could [we] have found these people when we didn’t know we were looking for them? The first place we would have looked is the phone book.… I submit to you we would have found them.” [US Congress, 12/11/2002]

Entity Tags: Khalid Almihdhar, Nawaf Alhazmi, Steve Bongardt, Bill Gore, FBI New York Field Office, Federal Bureau of Investigation

Timeline Tags: Complete 911 Timeline

Category Tags: Alhazmi and Almihdhar, Al-Qaeda Malaysia Summit, 9/11 Investigations, FBI 9/11 Investigation, Key Hijacker Events, CIA Hiding Alhazmi & Almihdhar, Search for Alhazmi/ Almihdhar in US

The FBI’s Minneapolis office asks for permission to interview Zacarias Moussaoui a few hours after the end of the 9/11 attacks, but permission is denied, apparently on the grounds that there is no emergency. On 9/11, the office’s counsel, Coleen Rowley, seeks permission from the Acting US Attorney to question Moussaoui about whether al-Qaeda has any further plans to hijack airliners or otherwise attack the US. The next day she asks again; this time the request is sent to the Justice Department. Such questioning would not usually be permitted, but Rowley argues that it should be allowed under a public safety exception. However, permission is denied and Rowley is told that the emergency is over so the public safety exception does not apply. Rowley will later comment: “We were so flabbergasted about the fact we were told no public safety emergency existed just hours after the attacks that my boss advised me to document it in a memo which became the first document in the legal subfile of the FBI’s ‘Penttbom’ case.” [Huffington Post, 5/2/2007] Some sources will suggest that Moussaoui was to be part of a second wave of attacks (see September 5, 2002). He is also an associate of shoe bomber Richard Reid, who will attempt to blow up an airliner later this year (see Mid-2000-December 9, 2000 and December 22, 2001).

Entity Tags: FBI Minnesota field office, Coleen Rowley, Zacarias Moussaoui, US Department of Justice

Timeline Tags: Complete 911 Timeline

Category Tags: All Day of 9/11 Events, Zacarias Moussaoui, 9/11 Investigations, FBI 9/11 Investigation

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: Complete 911 Timeline

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

Later in the day of 9/11, weapons are found planted on board three US airplanes. A US official will say, “These look like inside jobs.” Time magazine will later report, “Sources tell Time that US officials are investigating whether the hijackers had accomplices deep inside the airports’ ‘secure’ areas.” [Time, 9/22/2001] Penetrating airport security does not appear to have been that difficult: Argenbright, the company in charge of security at all the airports used by the hijackers, had virtually no security check on any of its employees, and even hired criminals and illegal immigrants. Security appears to be particularly abysmal at Boston’s Logan Airport, even after 9/11. [Boston Globe, 10/1/2001; CNN, 10/12/2001] An FAA official had similar concerns about two other security contractors at Logan Airport: Huntleigh USA, a subsidiary of ICTS International NV, a large Israeli security company, and Globe Aviation. [Associated Press, 9/11/2001; Christian Science Monitor, 1/8/2002; 9/11 Commission, 3/11/2004, pp. 6 pdf file]

Entity Tags: Globe Aviation Services Corp., Huntleigh Corp., Logan International Airport, Argenbright, ICTS International N.V.

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation, 9/11 Investigations, FBI 9/11 Investigation


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: Complete 911 Timeline

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

According to numerous rescue and recovery workers, the area around World Trade Center 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: Joseph Fortis, Daniel Nigro, Nick Visconti, Ray Goldbach, Tiernach Cassidy, Frank Fellini, Thomas Von Essen, Edward Kennedy (firefighter), Vincent Massa, John Norman, World Trade Center

Timeline Tags: Complete 911 Timeline

Category Tags: All Day of 9/11 Events, 9/11 Investigations, WTC Investigation, Key Day of 9/11 Events, World Trade Center, All Day of 9/11 Events, 9/11 Investigations, WTC Investigation, Key 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: Complete 911 Timeline

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

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: Complete 911 Timeline

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

One page of a torn up 757 cockpit poster used by the hijackers. It was found in a trash compactor at the Days Inn, near the Newark Airport.One page of a torn up 757 cockpit poster used by the hijackers. It was found in a trash compactor at the Days Inn, near the Newark Airport. [Source: FBI]Investigators find a remarkable number of possessions left behind by the hijackers:
bullet Two of Mohamed Atta’s bags are found on 9/11. They contain a handheld electronic flight computer, a simulator procedures manual for Boeing 757 and 767 aircraft, two videotapes relating to “air tours” of the Boeing 757 and 747 aircraft, a slide-rule flight calculator, a copy of the Koran, Atta’s passport, his will, his international driver’s license, a religious cassette tape, airline uniforms, a letter of recommendation, “education related documentation” and a note (see September 28, 2001) to other hijackers on how to mentally prepare for the hijacking. [Sydney Morning Herald, 9/15/2001; Boston Globe, 9/18/2001; Independent, 9/29/2001; Associated Press, 10/5/2001] Author Terry McDermott will later comment, “Atta’s bag contained nearly every important document in his life… If you wanted to leave a roadmap for investigators to follow, the suitcase was a pretty good place to start.” [McDermott, 2005, pp. 306]
bullet Marwan Alshehhi’s rental car is discovered at Boston’s Logan Airport containing an Arabic language flight manual, a pass giving access to restricted areas at the airport, documents containing a name on the passenger list of one of the flights, and the names of other suspects. The name of the flight school where Atta and Alshehhi studied, Huffman Aviation, is also found in the car. [Los Angeles Times, 9/13/2001]
bullet A car registered to Nawaf Alhazmi is found at Washington’s Dulles Airport on September 12. This is the same car he bought in San Diego in early 2000 (see March 25, 2000). Inside is a copy of Atta’s letter to the other hijackers, a cashier’s check made out to a flight school in Phoenix, four drawings of the cockpit of a 757 jet, a box cutter-type knife, maps of Washington and New York, and a page with notes and phone numbers. [Arizona Daily Star, 9/28/2001; Cox News Service, 10/21/2001; Die Zeit (Hamburg), 10/1/2002] The name and phone number of Osama Awadallah, a friend of Alhazmi and Khalid Almihdhar in San Diego, is also found on a scrap of paper in the car (see September 12, 2001 and After). [CNN, 2/1/2002]
bullet A rental car is found in an airport parking lot in Portland, Maine. Investigators are able to collect fingerprints and hair samples for DNA analysis. [Portland Press Herald, 10/14/2001]
bullet A Boston hotel room contains airplane and train schedules. [Sydney Morning Herald, 9/15/2001]
bullet FBI agents carry out numerous garbage bags of evidence from a Florida apartment where Saeed Alghamdi lived. [CNN, 9/17/2001]
bullet Two days before 9/11, a hotel owner in Deerfield Beach, Florida, finds a box cutter left in a hotel room used by Marwan Alshehhi and two unidentified men. The owner checks the nearby trash and finds a duffel bag containing Boeing 757 manuals, three illustrated martial arts books, an 8-inch stack of East Coast flight maps, a three-ring binder full of handwritten notes, an English-German dictionary, an airplane fuel tester, and a protractor. The FBI seizes all the items when they are notified on September 12 (except the binder of notes, which the owner apparently threw away). [Miami Herald, 9/16/2001; Associated Press, 9/16/2001]
bullet In an apartment rented by Ziad Jarrah and Ahmed Alhaznawi, the FBI finds a notebook, videotape, and photocopies of their passports. [Miami Herald, 9/15/2001]
bullet In a bar the night before 9/11, after making predictions of a attack on America the next day, the hijackers leave a business card and a copy of the Koran at the bar. The FBI also recovers the credit card receipts from when they paid for their drinks and lap dances. [Associated Press, 9/14/2001]
bullet A September 13 security sweep of Boston airport’s parking garage uncovers items left behind by the hijackers: a box cutter, a pamphlet written in Arabic, and a credit card. [Washington Post, 9/16/2001]
bullet A few hours after the attacks, suicide notes that some of the hijackers wrote to their parents are found in New York. Credit card receipts showing that some of the hijackers paid for flight training in the US are also found. [Los Angeles Times, 9/13/2001]
bullet A FedEx bill is found in a trash can at the Comfort Inn in Portland, Maine, where Atta stayed the night before 9/11. The bill leads to Dubai, United Arab Emirates, allowing investigators to determine much of the funding for 9/11. [Newsweek, 11/11/2001; London Times, 12/1/2001]
bullet A bag hijackers Alhazmi and Almihdhar left at a mosque in Laurel, Maryland, is found on September 12. The bag contains flight logs and even receipts from flight schools from San Diego the year before (see September 9, 2001).
bullet On 9/11, in a Days Inn hotel room in Newark, New Jersey, investigators find used plane tickets for Saeed Alghamdi, Ahmed Alhaznawi, Ziad Jarrah, and Ahmed Alnami. The tickets are all from a Spirit Continental Airlines flight from Ft. Lauderdale, Florida, to Newark on September 7. Also, flight manuals for Boeing 757 and 767 airplanes are found in English and Arabic. [Investigative Services Division, FBI Headquarters, 4/19/2002]
The hijackers past whereabouts can even be tracked by their pizza purchases. An expert points out: “Most people pay cash for pizza. These [hijackers] paid with a credit card. That was an odd thing.” [San Diego Union-Tribune, 9/3/2002] “In the end, they left a curiously obvious trail—from martial arts manuals, maps, a Koran, Internet and credit card fingerprints. Maybe they were sloppy, maybe they did not care, maybe it was a gesture of contempt of a culture they considered weak and corrupt.” [Miami Herald, 9/22/2001] The New Yorker quotes a former high-level intelligence official as saying: “Whatever trail was left was left deliberately—for the FBI to chase” (see Late September 2001). [New Yorker, 10/8/2001]

Entity Tags: Huffman Aviation, Federal Bureau of Investigation, Washington Dulles International Airport, Marwan Alshehhi, Ahmed Alhaznawi, Ahmed Alnami, Mohamed Atta, Saeed Alghamdi, Osama Awadallah, Nawaf Alhazmi, Terry McDermott, Ziad Jarrah

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation, Key Hijacker Events, Alhazmi and Almihdhar, Mohamed Atta, Ziad Jarrah, Marwan Alshehhi, Other 9/11 Hijackers

Michael Burton.Michael Burton. [Source: PBS]Following the World Trade Center collapses, a decision is made to quickly transport the remaining structural steel to scrap yards, to be shipped abroad and melted down for reuse. Consequently, virtually all of it is disposed of before investigators trying to assess why the WTC collapsed can examine it. Michael Burton and other officials at the Department of Design and Construction—the New York City agency overseeing the cleanup operation (see (September 11, 2001-May 2002))—are responsible for making this decision. Burton clears it with Richard Tomasetti of Thornton-Tomasetti Engineers, the prime consultant on the cleanup job. However, referring to the subsequent WTC investigation by the National Institute of Standards and Technology (see August 21, 2002), Tomasetti will later admit that had he known the direction that investigations into the collapses would take, he would have taken a different stand. [Langewiesche, 2002, pp. 30; Glanz and Lipton, 2004, pp. 330 and 396] Authors and New York Times reporters James Glanz and Eric Lipton write that Michael Burton, “who had become the effective czar for the cleanup job, had made it clear that he cared very little about engineering subtleties like the question of why the towers first stood, then collapsed on September 11. ‘We know why they fell,’ he said. ‘Because they flew two planes into the towers.’ But he was deeply immersed in the details of hauling steel out of the debris pile.” [Glanz and Lipton, 2004, pp. 299] Much of the WTC steel will be shipped to India, China, and other Asian countries for recycling (see September 12-October 2001).

Entity Tags: New York City Department of Design and Construction, World Trade Center, Michael Burton, Richard Tomasetti

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Category Tags: 9/11 Investigations, WTC Investigation

CIA officer Clark Shannon gives conflicting accounts of his conduct in the failed search for Khalid Almihdhar to the 9/11 Congressional Inquiry’s staff and CIA director George Tenet. Shannon attended a meeting at which the CIA and FBI discussed the investigation into the bombing of the USS Cole and failed to disclose information about hijackers Khalid Almihdhar and Nawaf Alhazmi to the Cole investigators (see June 11, 2001). Shannon tells the Congressional Inquiry’s staff that he was aware that Almihdhar had a US visa and Alhazmi had traveled to the US, but did not disclose this to the FBI, as he would not share such information outside the CIA unless authorized to do so. However, CIA director George Tenet tells the Congressional Inquiry that Shannon told him something different and that Almihdhar is not who they were talking about at the meeting. [New York Times, 10/17/2002; US Department of Justice, 11/2004 pdf file]

Entity Tags: Central Intelligence Agency, 9/11 Congressional Inquiry, Clark Shannon, George J. Tenet

Timeline Tags: Complete 911 Timeline

Category Tags: Alhazmi and Almihdhar, CIA Hiding Alhazmi & Almihdhar, 9/11 Investigations, FBI 9/11 Investigation

A manager at the FAA’s New York Center begins forwarding evidence relating to the 9/11 attacks to the FBI, but he does not pass on, or reveal the existence of, a tape recording of some of the center’s air traffic controllers recalling their interactions with the hijacked aircraft. [US Department of Transportation, 5/4/2004 pdf file] Shortly after the attacks occurred, Kevin Delaney, the New York Center’s quality assurance manager, was instructed to make a tape recording of six controllers at the center who had been involved in handling or tracking two of the hijacked aircraft, giving their personal accounts of what happened (see 11:40 a.m. September 11, 2001). [9/11 Commission, 10/1/2003 pdf file; Washington Post, 5/6/2004; Air Safety Week, 5/17/2004]
Tape Not Provided to FBI - In response to verbal requests from the FBI, the FAA’s liaison to the bureau provides it with evidential material relating to the 9/11 attacks. Beginning on September 12, Delaney forwards evidence materials, as they become available, to the FBI through this liaison. But, although the tape of the controllers’ statements was logged into the New York Center’s record of evidence, neither Delaney nor Mike McCormick, the center’s manager, passes it to the FBI. Furthermore, neither of the two managers even discloses the existence of the tape to the FBI or the FAA liaison. Nor do they provide the center’s evidence log, which references the tape, to the FBI. Yet McCormick will later claim that one of his reasons for having requested the tape be made on September 11 was that he wanted a recording of the controllers’ statements that would be immediately available for law enforcement efforts. [US Department of Transportation, 5/4/2004 pdf file; Air Safety Week, 5/17/2004] He had also reassured the six controllers that the tape with their recorded statements on would be strictly for use only by law enforcement personnel (see (Shortly Before 11:40 a.m.) September 11, 2001). [9/11 Commission, 10/1/2003 pdf file]
Tape Could Have Been Provided on Following Day - By September 13, the FAA liaison will have provided the FBI with air traffic control voice and radar data, which the bureau is most interested in receiving, as well as several written statements that have already been obtained from controllers at the FAA’s Boston and Cleveland Centers, and from personnel at Washington’s Dulles Airport. Had McCormick or Delaney notified the liaison of the tape’s existence, he could have forwarded it to the FBI along with these statements. The tape will be deliberately destroyed several months later (see Between December 2001 and February 2002), and is never made available to the FBI for its investigation. [US Department of Transportation, 5/4/2004 pdf file; Air Safety Week, 5/17/2004]

Entity Tags: Mike McCormick, Federal Bureau of Investigation, Kevin Delaney

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation

Billie Vincent, a former FAA security director, suggests the hijackers had inside help at the airports. “These people had to have the means to take control of the aircrafts. And that means they had to have weapons in order for those pilots to relinquish control. Think about it, they planned this thing out to the last detail for months. They are not going to take any risks at the front end. They knew they were going to be successful before they started… It’s the only thing that really makes sense to me.” [Miami Herald, 9/12/2001] The same day, the Boston Globe reports, “A former TWA official said he knew of at least two cases in which members of a cleaning crew smuggled weapons on board which were later used to hijack planes.… One source familiar with the airline industry said that, given enough time and money, it would not be difficult for terrorists to smuggle weapons onto a domestic flight. He said terrorists could arrange to have weapons moved onto an airliner by having terrorists or sympathizers hired as air cargo handlers or airline cleaners. The weapons could then be brought on board and concealed without ever having to pass through a security checkpoint. ‘If you have a year or more to plan, how hard can it be to get someone hired to clean the trash out of an airplane,’ the source said.” [Boston Globe, 9/12/2001]

Entity Tags: Billie Vincent

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation

Despite having been told by the FBI not to do so, Deena Burnett decides to speak to several groups of reporters about the four calls her husband Tom Burnett made to her from Flight 93, before it crashed in Pennsylvania. The FBI visited Deena the previous evening and, she later recalls, “told me specifically not to say anything to anyone about my cell phone conversations with Tom, especially the media, because it was part of their investigation.” [Burnett and Giombetti, 2006, pp. 81] But by this morning, she will comment, “everything I would have told the media had been reported on the news by the FBI, police, and Father Frank” Colacicco, from the church where her family worships. “If they could tell their stories, I knew now I could tell mine. There would be no harm to ‘the evidence’ in answering [reporters’] questions.” [San Francisco Chronicle, 9/12/2001; Burnett and Giombetti, 2006, pp. 93-94] Throughout the day, she has six “media waves” separately come into her home to interview her. The reporters are interested in the cell phone calls she received from her husband. She recalls: “I had to be very cautious about everything I said. I didn’t want to say anything that would interfere with the FBI investigation. I verified the calls had taken place, but gave no specific information about what Tom and I had discussed.” The FBI visits Deena around 3:00 p.m. to ask some follow-up questions to their interviews with her the previous day (see (12:30 p.m.) September 11, 2001). In her 2006 book, Deena Burnett makes no mention of them complaining about her having talked to the media. [Burnett and Giombetti, 2006, pp. 97-104]

Entity Tags: Tom Burnett, Deena Burnett, Federal Bureau of Investigation

Timeline Tags: Complete 911 Timeline

Category Tags: Other Events, FBI 9/11 Investigation

The Saudi passport of Saeed Alghamdi, said to be discovered in the wreckage of Flight 93.The Saudi passport of Saeed Alghamdi, said to be discovered in the wreckage of Flight 93. [Source: FBI]According to the 9/11 Commission, the passports of two hijackers are discovered in the wreckage of Flight 93. One passport, belonging to Saeed Alghamdi, is damaged but still readable. The other passport, belonging to Ziad Jarrah, is burned most of the way through, but part of his photograph is still visible. In addition, the passport of hijacker Abdulaziz Alomari is recovered because apparently it was put in Mohamed Atta’s luggage and the luggage did not get put on the flight Alomari and Atta were hijacking before it took off (see September 11-13, 2001). The recovery of these passports will not be made public at the time and will only be mentioned in passing in 2004 by the 9/11 Commission. A fourth passport, that of Satam Al Suqami, was also recovered on a street near the WTC (see After 8:46 a.m. September 11, 2001). That did become immediate news and caused skepticism by many who wondered how a paper document could survive such a crash (see After 8:46 a.m. September 11, 2001). [9/11 Commission, 1/26/2004]

Entity Tags: Abdulaziz Alomari, Satam Al Suqami, Ziad Jarrah, Saeed Alghamdi

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation

W. Gene Corley.W. Gene Corley. [Source: ASCE]The Federal Emergency Management Agency (FEMA) and its contractor, Greenhorne and O’Mara, Inc., from Greenbelt, Maryland, begin putting together a Building Performance Assessment Team (BPAT), to conduct a formal analysis of the World Trade Center collapses, and produce a report of its findings. FEMA routinely deploys such teams following disasters, like floods or hurricanes. The 23-member BPAT team set up at the WTC collapse site is assembled by the American Society of Civil Engineers (ASCE), and headed by Dr. W. Gene Corley of Construction Technologies Laboratories in Skokie, Illinois. Corley was previously the principal investigator for FEMA’s study of the Murrah Building, in Oklahoma City in 1995. [New Yorker, 11/12/2001] BPAT team members are based nationwide and have to communicate with each other mostly by phone, as they continue with their regular jobs. While some of them are being paid for their efforts, others are working on the investigation voluntarily. They are told not to speak with reporters, under threat of dismissal from the team, supposedly because of the delicacy of the subject with which they are dealing. The BPAT team receives $600,000 of funding from FEMA, plus approximately $500,000 in ASCE in-kind contributions. [New York Times, 12/25/2001; Associated Press, 1/14/2002; US Congress, 3/6/2002] The team will have great difficulty accessing the collapse site and evidence they want to see (see March 6, 2002). They will be unable to get FEMA to obtain such basic data as detailed blueprints of the WTC buildings. FEMA will also refuse to allow them to make appeals to the public for photos and videos of the towers that might aid their investigation. Bureaucratic restrictions will often prevent them from making forensic inspections at Ground Zero, interviewing witnesses, or getting important evidence, like recorded distress calls from people who were trapped in the towers. [Glanz and Lipton, 2004, pp. 330] The end product of their investigation is the FEMA World Trade Center Building Performance Study, released in May 2002 (see May 1, 2002).

Entity Tags: World Trade Center, W. Gene Corley, American Society of Civil Engineers, Federal Emergency Management Agency, Greenhorne and O’Mara, Inc.

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

Fort Myer.Fort Myer. [Source: US Army]At 6:00 a.m., the FBI opens the Joint Operations Center (JOC) for coordinating the emergency response to the Pentagon attack. The JOC is located in a community center at Fort Myer, an army base 1.5 miles northwest of the Pentagon, and is commanded by FBI Special Agent in Charge Timothy Bereznay. [US Department of Health and Human Services, 7/2002, pp. A23 and A28 pdf file; Goldberg et al., 2007, pp. 161] The US government’s January 2001 Interagency Domestic Terrorism Concept of Operations Plan (CONPLAN) allocated to the FBI responsibility for activating a JOC to coordinate the activities of federal departments and agencies in response to terrorist attacks. All the government organizations responding to the Pentagon attack are expected to assign a senior representative with decision-making authority to the JOC. There are 26 such representatives in all. Because many of the responding agencies are unfamiliar with the functions of the JOC, there is initially “considerable confusion” after it opens. [US Government, 1/2001; US Department of Health and Human Services, 7/2002, pp. C49 and C51 pdf file; Goldberg et al., 2007, pp. 161] The FBI has been able to set up the JOC particularly quickly as a result of its preparations for the annual meetings of the International Monetary Fund (IMF) and World Bank, scheduled to take place in Washington at the end of September (see 8:30 a.m. September 11, 2001). Months previously, the FBI surveyed regional sites and chose Fort Myer as the location to coordinate the law enforcement response to any violent protests at that event. [Guardian, 9/14/2001; Goldberg et al., 2007, pp. 161]

Entity Tags: Federal Bureau of Investigation, Joint Operations Center, Interagency Domestic Terrorism Concept of Operations Plan, Timothy Bereznay

Timeline Tags: Complete 911 Timeline

Category Tags: Other Events, FBI 9/11 Investigation

FBI Special Agent John Adams, who is now in charge of evidence recovery at the Pentagon during the daytime, addresses how the FBI should deal with the physical evidence at the crash site. [Creed and Newman, 2008, pp. 347 and 351] As the Pentagon is a crime scene, the FBI is responsible for collecting and documenting evidence there. [Creed and Newman, 2008, pp. 177] Agents are still carefully gathering together wreckage, but there is an overwhelming amount of it to deal with. Several FBI supervisors convene and discuss what the bureau should be recovering. One of them says every airplane part is significant and needs to be treated as valuable evidence. But Adams counters: “That can’t be. We know what happened here. Do we really need to collect every piece of the airplane?” Adams goes over to some National Transportation Safety Board (NTSB) crash experts at the site, who are responsible for determining what happened to Flight 77. When he asks them, “Do you guys want pieces of the plane?” an NTSB official responds: “No, it’s clear what happened here. We don’t need pieces of the wings and stuff like that. But we do need the black boxes.” [Creed and Newman, 2008, pp. 351-352]

Entity Tags: RobertMoomo, Federal Bureau of Investigation, John S. Adams

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation

John McColeJohn McCole [Source: Robson Books]Some gruesome remains are discovered in the World Trade Center ruins:
bullet Investigators find a pair of severed hands bound together with plastic handcuffs on a nearby building. They are believed to have belonged to a flight attendant. [Newsday, 9/15/2001]
bullet Honorary firefighter Michael Bellone and two other recovery workers discover the body of an attendant from American Airlines Flight 11. Reportedly, the men’s digging efforts reveal “a blue skirt, then one side of a body, and finally a pair of wings still attached to the lapel of a woman’s jacket.” [Swanson, 2003, pp. 140; Daily Standard (Grand Lake), 9/11/2006] Other reports describe the discovery of the body of a flight attendant with her hands bound. Presumably they are referring to the same remains. [Guardian, 9/13/2001; New York Times, 9/15/2001]
bullet There are reports of whole rows of seats with passengers in them being found, as well as much of the cockpit of one of the planes, complete with the body of a suspected hijacker. Police cannot confirm these reports. [Ananova, 9/13/2001; Guardian, 9/13/2001; New York Times, 9/15/2001]
bullet Fire Lieutenant John McCole sees a body bag with a tag on it saying, “Possible Perp—pilot.” McCole later comments, “I found it pretty amazing that someone’s body could remain so intact after crashing through a skyscraper into the middle of an inferno.” [McCole, 2002, pp. 57] Yet, contradicting the claim that a hijacker’s body was found, only in February 2003 are the remains of two hijackers identified (see Late February 2003).
While all of these bodies and plane parts are supposedly found, it will be claimed that none of the four black boxes for the two aircraft that hit the WTC are ever found. A National Transportation Safety Board spokesperson later says: “It’s extremely rare that we don’t get the recorders back. I can’t recall another domestic case in which we did not recover the recorders.” [CBS News, 2/25/2002] The black boxes are considered “nearly indestructible,” are placed in the safest parts of the aircraft, and are designed to survive impacts much greater than the WTC impact. They can withstand heat of up to 2,000 degrees Fahrenheit for one hour, and can withstand an impact of an incredible 3,400 G’s. [ABC News, 9/17/2001] However, in 2004, it will be reported that some of the black boxes are found in the weeks after 9/11, but their discovery is kept secret (see October 2001).

Entity Tags: World Trade Center, Mike Bellone, RobertMoomo, John McCole

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

A number of witnesses who claim they saw Mohamed Atta living in Venice, Florida in early 2001 later allege that, in the aftermath of the 9/11 attacks, they are intimidated by the FBI and told to keep quiet about what they knew. Amanda Keller, who claims to have lived with Atta during early 2001 (see (February-April 2001)), later says that, even after she moved away from Venice, FBI agents called her every other day for several months after the attacks. She tells investigative reporter Daniel Hopsicker about “intimidation by the FBI” that she suffered, adding, “They told me not to talk to anybody, to keep my mouth shut.” Stephanie Frederickson, who remembers Keller and Atta living next door to her in the Sandpiper Apartments in Venice, later recalls, “At first, right after the attack, [the FBI] told me I must have been mistaken in my identification. Or they would insinuate that I was lying. Finally they stopped trying to get me to change my story, and just stopped by once a week to make sure I hadn’t been talking to anyone. Who was I going to tell? Most everyone around here already knew.” Charles Grapentine, the manager of the Sandpiper Apartments, also confirms Atta having lived with Keller. He says that, after 9/11, the FBI “called me a liar, and told me to keep my mouth shut.” [Hopsicker, 2004, pp. 62-63, 65 and 88-89] According to the FBI’s account of events, Atta had left Venice by late December 2000 or early January 2001. Its account makes no mention of him returning there later. [US Congress, 9/26/2002] A former manager at Huffman Aviation, the Venice flight school attended by Atta in late 2000 (see July 6-December 19, 2000), also later alleges that the FBI intimidated him and told him to keep quiet. He says the FBI was “outside my house four hours after the attack.” He claims his phones were bugged after 9/11, and adds, “I thought these guys [Atta and his associates] were double agents. Why is that so incriminating?” [Hopsicker, 2004, pp. 149-150]

Entity Tags: Daniel Hopsicker, Charles Grapentine, Mohamed Atta, Federal Bureau of Investigation, Stephanie Frederickson, Amanda Keller

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation

Around 2:30 a.m., the FBI arrives at Huffman Aviation flight school in Venice, Florida, inquiring about suspected hijackers Mohamed Atta and Marwan Alshehhi, who attended the school (see July 6-December 19, 2000). Huffman Aviation has around 200 students, about half of them foreigners. The FBI takes away all its records on former students, including photocopies of Atta and Alshehhi’s passports, as well as two computers. [Charlotte Sun, 9/12/2001; New York Times, 9/13/2001; US Congress, 3/19/2002] Students at another Florida flight school say the FBI arrived at their school within hours of the attacks (see September 11, 2001).

Entity Tags: Huffman Aviation, Mohamed Atta, Federal Bureau of Investigation, Marwan Alshehhi

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation

Airphone from Flight 93 wreckage.Airphone from Flight 93 wreckage. [Source: National Museum of American History]The first FBI agents arrive at the Flight 93 crash scene soon after it goes down. [Kashurba, 2002, pp. 60] Due to the criminal nature of the crash, the FBI becomes lead authority for the investigation of the site. Attempts are made to have the area declared a federal disaster, but these are unsuccessful. [DMORT National News, 1/2002] For about two weeks, the FBI’s evidence recovery team of about 150 agents goes over the site with sifters, filtering evidence from the soil. It recovers about 510 pounds of human remains. [Longman, 2002, pp. 259; Age (Melbourne), 9/9/2002] Despite the lack of wreckage reported by those first at the crash scene (see (After 10:06 a.m.) September 11, 2001), the FBI claims that it recovers 95 percent of the plane. The largest piece found, it says, is a seven-foot-long piece of the fuselage skin, including four windows. With the exception of the two black boxes, all wreckage is passed on to United Airlines. Asked what United will do with this, a spokeswoman says, “I don’t think a decision has been made… but we’re not commenting.” [CNN, 9/24/2001; Pittsburgh Post-Gazette, 9/25/2001] While conducting its investigation of the crash site, the FBI overrules a plan to carefully map the area and mark the positions of debris so as to determine exactly how Flight 93 crashed, claiming this would be too time-consuming (see September 16, 2001). [Longman, 2002, pp. 262] After it completes its work, the site becomes the responsibility of the county coroner, who continues the search for remains. [Longman, 2002, pp. 258-259]

Entity Tags: United Airlines, Federal Bureau of Investigation

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation, 9/11 Investigations, FBI 9/11 Investigation

On September 12, 2001, 9/11 hijacker Nawaf Alhazmi’s 1988 Toyota Corolla is found at a parking lot near Washington, DC. Alhazmi and fellow hijacker Khalid Almihdhar bought the car in San Diego in March 2000 (see March 25, 2000). [Los Angeles Times, 9/27/2001] Various items are found in the car (see September 11-13, 2001), including an old telephone number of Osama Awadallah. Alhazmi knew Awadallah when he lived in San Diego in 2000. Awadallah’s San Diego house is searched soon thereafter, and photos, videos, and articles relating to Osama bin Laden are found. Investigators also discover that copies of bin Laden’s fatwas (religious edicts) and other similar materials were distributed by people living in the house. [9/11 Commission, 7/24/2004, pp. 219-220] Awadallah worked with Alhazmi at a San Diego gas station with a number of radical Islamists (see Autumn 2000). A witness claims that one day before 9/11, he seemed to be celebrating the upcoming 9/11 attacks at the gas station, telling co-workers, “it is finally going to happen” (see Late August-September 10, 2001). Authorities will never develop enough evidence to charge Awadallah with any serious crime, and he will be deported in 2006 after a long legal battle (see May 4, 2006).

Entity Tags: Osama bin Laden, Khalid Almihdhar, Nawaf Alhazmi, Osama Awadallah

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, Possible Hijacker Associates in US, FBI 9/11 Investigation

Following the attacks, there is no agreement on the speed with which the Twin Towers of the World Trade Center collapsed on 9/11 (see 9:59 a.m. September 11, 2001 and 10:28 a.m. September 11, 2001). The 9/11 Commission says that the South Tower collapsed in “ten seconds” and the National Institute of Standards and Technology says that tops of the buildings came down “essentially in free fall.” [9/11 Commission, 7/24/2004, pp. 305; National Institute of Standards and Technology, 9/2005, pp. 146] In the dispute over the reason for the WTC’s collapse after 9/11, it is claimed that, if the towers fell in ten seconds, then this is evidence they were destroyed by explosives. For example, David Ray Griffin, a theologian and outspoken critic of commission’s report, writes, “For a 1,300-foot building, however, ten seconds is almost free-fall speed. But if each floor produced just a little resistance, so that breaking through each one took half a second, the collapse of all those floors—80 or 95 of them—would have taken 40 to 47 seconds. Can we really believe that the upper part of the buildings encountered virtually no resistance from the lower part?” [Griffin, 2004, pp. 16] But according to Canadian scientist Frank Greening, who studies the Twin Towers’ collapse, the freefall time would be about 9.6 seconds, and he calculates that it takes longer for the buildings to fall—twelve to thirteen and a half seconds—and states this does not indicate that explosives were used. [Canadian Broadcasting Corporation, 8/25/2005]

Entity Tags: World Trade Center, Frank Greening, National Institute of Standards and Technology, David Ray Griffin, 9/11 Commission

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

On September 12, the FBI in Miami issues a national bulletin for law enforcement agencies to be on the lookout for two cars connected with the 9/11 attacks. One is a red 1989 Pontiac registered to Mohamed Atta, presumably the car he bought in July 2000 (see Early July 2000). The other is an Oldsmobile Alero, leased from a company in Boca Raton, but this is located later in the day. [Washington Post, 9/12/2001; WESH 2 (Orlando/Daytona), 9/12/2001; CNN, 9/13/2001] About six weeks later, the Pontiac and another unspecified car that belonged to Atta and Marwan Alshehhi are found at a used car dealership in Tamarac, Florida, near Fort Lauderdale. The hijackers reportedly sold them a week before 9/11. [CNN, 10/26/2001; CNN, 10/28/2001; Miami Herald, 10/29/2001] Also around this time, Brad Warrick, the owner of a Florida company that rented cars to Atta (see August 6-September 9, 2001), reports finding about a teaspoon of an unidentified white powder in the trunk of a Ford Escort used by Atta in the days before the attacks. The FBI had impounded the car for two weeks after 9/11, and it has not been used since. An FBI spokeswoman says it is unlikely that agents would have missed a suspicious powder and suggests it could be fingerprinting dust. [Miami Herald, 10/29/2001; Reuters, 10/29/2001; Washington Post, 10/30/2001]

Entity Tags: Brad Warrick, Mohamed Atta, Federal Bureau of Investigation

Timeline Tags: Complete 911 Timeline

Category Tags: Mohamed Atta, 9/11 Investigations, FBI 9/11 Investigation

Steel beams from the WTC were already being removed and recycled on September 20, 2001.Steel beams from the WTC were already being removed and recycled on September 20, 2001. [Source: Associated Press]In the month following 9/11, a significant amount of the steel debris from the WTC collapses is removed from the rubble pile, cut into smaller sections, and either melted at a recycling plant or shipped out of the US. [US Congress, 3/6/2002] Each of the Twin Towers contained 78,000 tons of recyclable steel. Much of this is shipped to India, China, and other Asian countries, where it will be melted down and reprocessed into new steel products. Asian companies are able to purchase the steel for just $120 per ton, compared, for example, to a usual average price of $150 per ton in China. Industry officials estimate that selling off the steel and other metals from the WTC for recycling could net a few tens of million dollars. [New York Times, 10/9/2001; Reuters, 1/21/2002; Reuters, 1/22/2002; Eastday, 1/24/2002; CorpWatch, 2/6/2002] 9/11 victims’ families and some engineers are angered at the decision to quickly discard the steel, believing it should be examined to help determine how the towers collapsed. A respected fire fighting trade magazine comments, “We are literally treating the steel removed from the site like garbage, not like crucial fire scene evidence.” [Fire Engineering, 1/2002] Rep. Joseph Crowley (D-NY) will later call the loss of this evidence “borderline criminal.” By March 2002, 150 pieces of steel from the WTC debris will have been identified by engineers for use in future investigations (see March 6, 2002). [Federal Emergency Management Agency, 5/1/2002, pp. D-13] A study by the National Institute of Standards and Technology (NIST), which commences in August 2002 [National Institute of Standards and Technology, 8/21/2002; Associated Press, 8/21/2002] , will have 236 pieces of recovered steel available to it. Of these, 229 pieces are from WTC 1 and 2, representing “roughly 0.25 percent to 0.5 percent of the 200,000 tons of structural steel used in the construction of the two towers.” [National Institute of Standards and Technology, 9/2005, pp. 85 pdf file] New York Mayor Mike Bloomberg defends the decision to quickly get rid of the WTC steel, saying, “If you want to take a look at the construction methods and the design, that’s in this day and age what computers do. Just looking at a piece of metal generally doesn’t tell you anything.” Officials in the mayor’s office decline to reply to requests by the New York Times regarding who decided to have the steel recycled. [New York Times, 12/25/2001; Eastday, 1/24/2002]

Entity Tags: Joseph Crowley, World Trade Center, Michael R. Bloomberg

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

A chunk of hot metal being removed from the North Tower rubble about eight weeks after 9/11.
A chunk of hot metal being removed from the North Tower rubble about eight weeks after 9/11. [Source: Frank Silecchia]In the weeks and months after 9/11, numerous individuals report seeing molten metal in the remains of the World Trade Center:
bullet Ken Holden, who is involved with the organizing of demolition, excavation, and debris removal operations at Ground Zero, will later tell the 9/11 Commission, “Underground, it was still so hot that molten metal dripped down the sides of the wall from [WTC] Building 6.” [9/11 Commission, 4/1/2003]
bullet William Langewiesche, the only journalist to have unrestricted access to Ground Zero during the cleanup operation, will describe, “[I]n the early days, the streams of molten metal that leaked from the hot cores and flowed down broken walls inside the foundation hole.” [Langewiesche, 2002, pp. 32]
bullet Leslie Robertson, one of the structural engineers responsible for the design of the WTC, describes fires still burning and molten steel still running 21 days after the attacks. [SEAU News, 10/2001 pdf file]
bullet Alison Geyh, who heads a team of scientists studying the potential health effects of 9/11, reports: “Fires are still actively burning and the smoke is very intense. In some pockets now being uncovered, they are finding molten steel.” [Johns Hopkins Public Health Magazine, 2001]
bullet Ron Burger, a public health advisor who arrives at Ground Zero on September 12, says that “feeling the heat” and “seeing the molten steel” there reminds him of a volcano. [National Environmental Health Association, 9/2003, pp. 40 pdf file]
bullet Paramedic Lee Turner arrives at the World Trade Center site on September 12 as a member of a federal urban search and rescue squad. While at Ground Zero, he goes “down crumpled stairwells to the subway, five levels below ground.” There, he reportedly sees, “in the darkness a distant, pinkish glow—molten metal dripping from a beam.” [US News and World Report, 9/12/2002]
bullet According to a member of New York Air National Guard’s 109th Air Wing, who is at Ground Zero from September 22 to October 6: “One fireman told us that there was still molten steel at the heart of the towers’ remains. Firemen sprayed water to cool the debris down but the heat remained intense enough at the surface to melt their boots.” [National Guard Magazine, 12/2001]
bullet New York firefighters will recall “heat so intense they encountered rivers of molten steel.” [New York Post, 3/3/2004]
bullet As late as five months after the attacks, in February 2002, firefighter Joe O’Toole sees a steel beam being lifted from deep underground at Ground Zero, which, he says, “was dripping from the molten steel.” [Knight Ridder, 5/29/2002]
Steven E. Jones, a physics professor from Utah, will claim this molten metal is “direct evidence for the use of high-temperature explosives, such as thermite,” used to deliberately bring down the WTC towers. [MSNBC, 11/16/2005] He will say that without explosives, a falling building would have “insufficient directed energy to result in melting of large quantities of metal.” [Deseret Morning News, 11/10/2005] There will be no mention whatsoever of the molten metal in the official reports by FEMA, NIST, or the 9/11 Commission. [Federal Emergency Management Agency, 5/1/2002; 9/11 Commission, 7/24/2004; National Institute of Standards and Technology, 9/2005] But Dr. Frank Gayle, who leads the steel forensics aspects of NIST’s investigation of the WTC collapses, will be quoted as saying: “Your gut reaction would be the jet fuel is what made the fire so very intense, a lot of people figured that’s what melted the steel. Indeed it didn’t, the steel did not melt.” [ABC News 7 (New York), 2/7/2004] As well as the reports of molten metal, data collected by NASA in the days after 9/11 finds dozens of “hot spots” (some over 1,300 degrees) at Ground Zero (see September 16-23, 2001).

Entity Tags: Frank Gayle, Joe O’Toole, Ken Holden, Leslie Robertson, Alison Geyh, Lee Turner, William Langewiesche, Ron Burger, World Trade Center, Steven E. Jones

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation, 9/11 Investigations, WTC Investigation, 9/11 Investigations, WTC Investigation, 9/11 Investigations, WTC Investigation

At the time of 9/11, the FBI’s Saudi Arabia office was comprised of only legal attache Wilfred Rattigan and his assistant Gamal Abdel-Hafiz. Abdel-Hafiz, the FBI’s only Muslim agent at the time, had been appointed to the position in February 2001 despite a controversy with his FBI work back in the US (see Early 1999-March 21, 2000). Some fellow FBI agents accused him of refusing to secretly record conversations with Muslim suspects. Time will report, “The FBI sent reinforcements [to the Saudi Arabian office] within two weeks of 9/11, but it appears that the bureau’s team never got on top of the thousands of leads flowing in from the US and Saudi governments.… According to several former employees of the US embassy in Riyadh, the FBI legal attache’s office housed within the embassy was often in disarray during the months that followed 9/11. When an FBI supervisor arrived [nearly a year after 9/11] to clean up the mess, she found a mountain of paper and, for security reasons, ordered wholesale shredding that resulted in the destruction of unprocessed documents relating to the 9/11 investigations.” In June 2005, the Senate Judiciary Committee will begin investigating allegations that the FBI’s Saudi office was “delinquent in pursuing thousands of leads” related to 9/11. Piles of time-sensitive leads still had not been followed up when the supervisor arrives. The FBI will claim that the thousands of shredded documents were duplicated elsewhere. But the Judiciary Committee will assert some material is lost. One employee will claim that some of the lost information “was leads, suspicious-activity material, information on airline pilots.” Rattigan, who has converted to Islam, later will sue the FBI for discrimination and will claim that the FBI refused to provide him with adequate resources to cope with the workload after 9/11. [Frontline, 10/16/2003; Time, 6/27/2005]

Entity Tags: Gamal Abdel-Hafiz, Federal Bureau of Investigation, Wilfred Rattigan

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, FBI 9/11 Investigation

Ronald Hamburger, a member of NIST’s WTC team and advocate of the ‘piledriver’ theory.Ronald Hamburger, a member of NIST’s WTC team and advocate of the ‘piledriver’ theory. [Source: National Council of Structural Engineers' Associations]After 9/11, the scientists investigating the WTC collapse give very different figures for the buildings’ weight. Some sources say that each building weighed 500,000 tons. For example, MIT professor Thomas Eager writes, “The total weight of each tower was about 500,000 t.” [Scientific American, 10/9/2001; Eagar and Musso, 12/2001; Frank Greening, 2/16/2006, pp. 23 pdf file; PBS, 8/2006] However, the National Institute of Standards and Technology (NIST) states that the buildings weighed only 250,000 tons each. [National Institute of Standards and Technology, 9/2005, pp. 32] One theory explaining the building’s total collapse is that the upper section acts as a “piledriver” and smashes through the floors below it. [BBC, 9/13/2001; Stanford Report, 12/5/2001] The heavier the upper block above the impact zone, the more likely it is to be able to destroy the other floors as it falls.

Entity Tags: World Trade Center, Thomas Eager, National Institute of Standards and Technology

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

Workers involved in the cleanup at Ground Zero find that much of the World Trade Center towers and their contents have been pulverized to dust. Charlie Vitchers, a construction superintendent who oversees the operation, says, “Apart from recoveries, we didn’t find one thing. Nothing. Not even a file cabinet.… As we were working on the pile, people were saying, ‘We’re not finding anything.’” He adds, “We weren’t going to find anything that was made out of wood. But you think we would have found a computer.… We found cell phones. We found shoes. But with regard to furniture, nothing, not a thing, not a desk, not a wall panel.… [F]or the most part there was nothing in the pile of debris that was recognizable.” Crane operator Bobby Gray says, “I don’t remember seeing carpeting or furniture. You’d think a metal file cabinet would make it, but I don’t remember seeing any, or phones, computers, none of that stuff. There were areas where there were no fires, which is not to say that they didn’t experience tremendous heat anyway. But even in areas that never burned we didn’t find anything.” He comments, “It was just so hard to comprehend that everything could have been pulverized to that extent. How do you pulverize carpet or filing cabinets?” [Stout, Vitchers, and Gray, 2006, pp. 143-144] According to Greg Meeker of the US Geological Survey, “Six million sq ft of masonry, 5 million sq ft of painted surfaces, 7 million sq ft of flooring, 600,000 sq ft of window glass, 200 elevators, and everything inside came down as dust” when the towers collapsed. “The only thing that didn’t get pulverized was the WTC towers’ 200,000 tons of structural steel.” [Chemical and Engineering News, 10/20/2003] Some people will later claim that this complete pulverization of the WTC is evidence of the towers having been brought down deliberately, using explosives. [Griffin, 2004, pp. 26; Griffin and Scott, 2006, pp. 46-47]

Entity Tags: Gregory Meeker, World Trade Center, Bobby Gray, Charlie Vitchers

Timeline Tags: Complete 911 Timeline

Category Tags: 9/11 Investigations, WTC Investigation

Page 1 of 5 (429 events)
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Key Events

Key Day of 9/11 Events (98)Key Hijacker Events (142)Key Warnings (33)

Day of 9/11

All Day of 9/11 Events (1285)Flight AA 11 (145)Flight UA 175 (95)Flight AA 77 (147)Flight UA 93 (232)George Bush (134)Dick Cheney (56)Donald Rumsfeld (35)Richard Clarke (34)Pentagon (121)World Trade Center (85)Shanksville, Pennsylvania (23)Alleged Passenger Phone Calls (64)Training Exercises (58)

The Alleged 9/11 Hijackers

Alhazmi and Almihdhar (328)Marwan Alshehhi (124)Mohamed Atta (189)Hani Hanjour (69)Ziad Jarrah (66)Other 9/11 Hijackers (138)Possible Hijacker Associates in US (33)Alleged Hijackers' Flight Training (68)Hijacker Contact w Government in US (34)Possible 9/11 Hijacker Funding (9)HIjacker Visas and Immigration (6)

Alhazmi and Almihdhar: Specific Cases

Bayoumi and Basnan Saudi Connection (47)CIA Hiding Alhazmi & Almihdhar (116)Search for Alhazmi/ Almihdhar in US (39)

Projects and Programs

Al-Qaeda Malaysia Summit (165)Able Danger (59)Phoenix Memo (27)Yemen Hub (70)

Before 9/11

Warning Signs (289)Insider Trading/ Foreknowledge (47)Pakistani ISI Links to 9/11 (59)Alleged Israeli Spy Ring (23)Counterterrorism Policy/Politics (192)Counterterrorism Action Before 9/11 (25)Military Exercises (79)1993 WTC Bombing (18)Other Pre-9/11 Events (40)

Warning Signs: Specific Cases

Foreign Intelligence Warnings (32)Bush's Aug. 6, 2001 PDB (40)Presidential Level Warnings (29)

The Post-9/11 World

9/11 Investigations (549)9/11 Related Criminal Proceedings (14)9/11 Denials (28)US Government and 9/11 Criticism (45)9/11 Related Lawsuits (22)Media (35)Other Events (74)

Investigations: Specific Cases

9/11 Commission (185)Role of Philip Zelikow (82)9/11 Congressional Inquiry (29)CIA OIG 9/11 Report (16)FBI 9/11 Investigation (95)WTC Investigation (111)

Other Al-Qaeda-Linked Figures

Anwar Al-Awlaki (15)Khalid Shaikh Mohammed (105)Mohammed Haydar Zammar (32)Nabil Al-Marabh (29)Osama bin Laden (9)Ramzi Bin Al-Shibh (65)Zacarias Moussaoui (152)Al-Qaeda's Hamburg Cell (111)
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