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EVENTS

Guy Tozzoli.Guy Tozzoli. [Source: Business Wire]Guy Tozzoli, a former director of the Port Authority’s World Trade Department, recommends during a legislative hearing that emergency response agencies and the New York Port Authority train for the possibility of an aircraft crashing into the World Trade Center, but his recommendation will be ignored. [Newsday, 11/12/2001; Globe and Mail, 6/4/2002; Dwyer and Flynn, 2005, pp. 59] Tozzoli, who is known as “Mr. World Trade Center” due to his close association with the WTC complex, makes his recommendation on the third and final day of public hearings, presided over by New York State Senator Roy Goodman (R-Manhattan), into the security and safety aspects of the recent WTC bombing (see (March 22-29, 1993)). He is the last person, out of 26 witnesses, to be questioned. [Newsday, 11/12/2001; Barrett and Collins, 2006, pp. 86] Tozzoli’s testimony is “the only time that an airplane scenario came up in any detail” during the hearings, according to Newsday. Tozzoli’s recommendation, however, will be ignored. Alan Reiss, the director of the World Trade Department at the time of the 9/11 attacks, will say in November 2001 that “no exercise based on an airplane scenario was done over the past eight years.”
Computer Simulation Examined Effect of a Plane Hitting the WTC - During his testimony, Tozzoli also describes a computer simulation that was performed when the Twin Towers were being constructed—apparently referring to a simulation conducted in 1964 (see February 27, 1993 and Between September 3, 2001 and September 7, 2001)—to determine the effect of a Boeing 707 crashing into one of the buildings. “The computer said [the 707] would blow out the structural steel supports along one side of the building completely to seven floors, and naturally there would be a large loss of life on those seven floors because of the explosion,” Tozzoli says. “However,” he continues, “the structure of the building would permit the 50 floors or whatever it is above to remain and not topple, because the loads would distribute themselves around the other three walls and then eventually be assimilated in the floors below.” Furthermore, Tozzoli describes a training exercise the Port Authority held in 1982, which simulated a plane crashing into the Twin Towers (see November 7, 1982).
Report Based on Hearings Ignores Tozzoli's Recommendation - No newspapers mention Tozzoli’s testimony, and the report based on the hearings will not include Tozzoli’s recommendation that the Port Authority train for an aircraft hitting the WTC. Charles Jennings, a professor of fire protection at John Jay College of Criminal Justice, will comment, shortly after 9/11, that Tozzoli’s recommendation appears to contradict official claims that no one could have prepared for what happened on September 11. “The fact that this was explicitly suggested by Port Authority personnel in a public hearing certainly suggests that there was or should have been awareness of this threat and consideration of planning for it among the effected agencies,” he will say. [Newsday, 11/12/2001; Dwyer and Flynn, 2005, pp. 58-59]

Entity Tags: Alan Reiss, Guy Tozzoli, Charles Jennings, World Trade Center

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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, 9/11 Timeline

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

Entity Tags: William Rodriguez, World Trade Center

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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

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

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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

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

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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

Entity Tags: William Rodriguez, World Trade Center

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Air Force General Richard Myers, vice chairman of the Joint Chiefs of Staff, and acting chairman on 9/11.
Air Force General Richard Myers, vice chairman of the Joint Chiefs of Staff, and acting chairman on 9/11. [Source: NORAD]According to his own account, Air Force General Richard Myers, the vice chairman of the Joint Chiefs of Staff, sees reports of the first WTC crash on television. Myers is acting chairman of the US military during the 9/11 crisis because Chairman of the Joint Chiefs of Staff Army General Henry Shelton is flying across the Atlantic for a NATO meeting in Europe. [ABC News, 9/11/2002; American Forces Press Service, 9/8/2006] Myers has a 9 o’clock appointment with Senator Max Cleland (D-GA) in one of the Senate office buildings. He is heading into this meeting and sees a television in Cleland’s outer office showing the burning North Tower, with the commentator suggesting it has been hit by an airplane. [MSNBC, 9/11/2002] Myers later recalls, “They thought it was a small plane or something like that.” [Armed Forces Radio And Television Service, 10/17/2001; American Forces Press Service, 10/23/2001] He says, “And we’re standing around saying, ‘What in the world happened?’ I remember the day being beautiful. I said, ‘How could a pilot be that stupid, to hit a tower? I mean, what’—but then you think, ‘Well, whatever.’” So he goes ahead and walks into the meeting, and is with Cleland at the time the second tower is hit (see (Shortly After 9:03 a.m.) September 11, 2001). [Council on Foreign Relations, 6/29/2006] On several occasions, Cleland will confirm that Myers had this meeting with him. [US Congress, 9/13/2001; CNN, 11/20/2001; Atlanta Journal-Constitution, 6/16/2003] But counterterrorism “tsar” Richard Clarke seems to contradict this account. He claims that, when he joins a video teleconference shortly after arriving at the White House, he sees Myers on screen, indicating that Myers is at the Pentagon rather than with Cleland (see (9:10 a.m.) September 11, 2001). [Clarke, 2004, pp. 1-3]

Entity Tags: Richard A. Clarke, Henry Hugh Shelton, Max Cleland, Richard B. Myers

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Ryan Gonsalves.Ryan Gonsalves. [Source: Institute for the Study of War]An officer in the National Military Command Center (NMCC) at the Pentagon learns, during a phone call to the FAA, of the hijacking of Flight 11, but the FAA tells him it does not need any help dealing with this, as everything seems to be under control. [9/11 Commission, 4/29/2004 pdf file; 9/11 Commission, 7/24/2004, pp. 35]
NMCC Officer Calls FAA for Information - After those in the NMCC learned from television that an aircraft had crashed into the World Trade Center (see (8:48 a.m.) September 11, 2001), Lieutenant Colonel Ryan Gonsalves, the senior operations officer there, began gathering up as much information as he could on the crisis. One of the phone calls he makes is to the FAA operations center at the agency’s Washington, DC, headquarters. The employee at the operations center who answers the call tells Gonsalves that the FAA has had a report of a hijacking on a plane that departed Boston. [9/11 Commission, 4/29/2004 pdf file; 9/11 Commission, 5/5/2004]
FAA Says It Does Not Need Help - The FAA employee apparently does not connect the plane crashing into the WTC with the hijacked Flight 11, which they claim is still airborne and heading for New York’s JFK International Airport. The entry in the senior operations officer’s log about the call will state: “9:00 NMCC called FAA, briefed of explosion at WTC possibly from aircraft crash. Also, hijacking of American Flight 11 from Boston to LA, now en route to Kennedy.” [9/11 Commission, 7/24/2004, pp. 462] Furthermore, when Gonsalves asks if the FAA needs any assistance dealing with the hijacking, the operations center employee replies, “No,” and says the pilot “had called in and said everything was under control, and he was going to land at New York shortly.” [9/11 Commission, 4/29/2004 pdf file; 9/11 Commission, 5/5/2004] The possibility of scrambling fighter jets is not discussed during the phone call. Even though military instructions state that the NMCC is to be “notified by the most expeditious means by the FAA” in response to aircraft hijackings in US airspace (see June 1, 2001), this call, according to the 9/11 Commission Report, appears to be the first time the FAA informs the NMCC of the hijacking of Flight 11. [US Department of Defense, 6/1/2001 pdf file; 9/11 Commission, 7/24/2004, pp. 35]

Entity Tags: National Military Command Center, Federal Aviation Administration, Ryan Gonsalves

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Rick Tepper.Rick Tepper. [Source: Eileen Blass]Air traffic controllers at Newark International Airport in New Jersey are on the phone with controllers at the FAA’s New York Center and are asked to find Flight 175 from their windows. They see it and watch in horror as it drops the last 5,000 feet and crashes into the World Trade Center. Controller Rick Tepper will recall: “He was in a hard right bank, diving very steeply and very fast. And he—as he was coming up the Hudson River, he—he made another hard left turn and—just heading for downtown Manhattan.… You could see that he was trying to line himself up on the tower. Just before he hit the tower, he almost leveled it out and just—just hit the building.” Newark tower immediately calls the FAA’s Herndon Command Center and says it will not land any more airplanes in Newark, in an effort to keep aircraft away from New York City. This is the first step in shutting down the national airspace system. [MSNBC, 9/11/2002]

Entity Tags: Rick Tepper, Federal Aviation Administration, New York Air Route Traffic Control Center, Newark International Airport

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

NORAD’s Northeast Air Defense Sector (NEADS) in Rome, NY, has just received a phone call informing it of the hijacking of Flight 175 (see (9:03 a.m.) September 11, 2001), and several personnel have witnessed the plane crashing into the second World Trade Center tower live on CNN. There is considerable confusion on the operations floor over whether the plane seen on TV is the hijacking they have just been informed of. Tape recordings capture NEADS personnel in the background trying to make sense of things: “Is this explosion part of that that we’re lookin’ at now on TV?“… “And there’s a possible second hijack also—a United Airlines“… “Two planes?” Someone comments, “I think this is a damn input, to be honest.” [Vanity Fair, 8/1/2006] Another person replies, “Then this is a damned messed-up input!” [Spencer, 2008, pp. 84] “Input” refers to a simulations input, as part of a training exercise. [Vanity Fair, 8/1/2006] NORAD has the capacity to inject simulated material, including mass attacks, during exercises, “as though it was being sensed for the first time by a radar site.” [US Department of Defense, 1/15/1999] At least one military exercise this morning is reported to include simulated information injected onto radar screens (see (9:00 a.m.) September 11, 2001). [Toronto Star, 12/9/2001] At the current time, despite the earlier crash of Flight 11, NORAD has yet to cancel a major exercise it is in the middle of (see (Shortly After 9:03 a.m.) September 11, 2001). [Filson, 2003, pp. 59]

Entity Tags: Northeast Air Defense Sector

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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

Entity Tags: Barry Jennings, Michael Hess

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

The National Miilitary Command Center, inside the Pentagon.The National Miilitary Command Center, inside the Pentagon. [Source: US Department of Defense]The National Military Command Center (NMCC) at the Pentagon finally commences and runs a “significant event conference” in response to the ongoing crisis, 26 minutes after the second plane hit the World Trade Center and officers in the NMCC realized the US was under terrorist attack. [9/11 Commission, 6/17/2004 pdf file; 9/11 Commission, 7/24/2004, pp. 37; American Forces Press Service, 9/7/2006]
NMCC Directors Decided to Establish Conference - After those in the NMCC saw Flight 175 hitting the WTC live on television at 9:03 a.m. (see 9:03 a.m. September 11, 2001), Captain Charles Leidig, the acting deputy director for operations (DDO) in the center throughout the attacks, and Commander Pat Gardner, the assistant DDO, talked about the need to convene a significant event conference so there could be a discussion of what actions were to be taken in response. The DDO and the assistant DDO are the two officers responsible for deciding what type of conference the NMCC should convene, and when it should do so. Because there is no specific procedure for dealing with terrorist attacks, Leidig and Gardner decided a significant event conference would most suit their needs, because it would have the flexibility of allowing more people to be added in as required. They also discussed who would need to be on this conference. [9/11 Commission, 4/29/2004 pdf file] But Major Charles Chambers, who is currently on duty in the NMCC, will give a slightly different account. According to Chambers, Staff Sergeant Val Harrison had a phone in her hand and said NORAD was asking for a significant event conference. Leidig had agreed, and so Harrison started establishing the conference.
Conference Begins with Recap of Situation - According to Chambers, “The computer does a mass dialing to connect to those command centers that are always included” in an NMCC conference call, but Harrison also had to manually call the civilian agencies that were going to be included in the conference, such as the FAA, the FBI, and the Federal Emergency Management Agency (FEMA). [US Department of Defense, 9/2001] The conference then begins at 9:29 a.m. with a brief recap: Two aircraft have hit the WTC, there is a confirmed hijacking of Flight 11, and fighter jets have been scrambled from Otis Air National Guard Base in Massachusetts (see 8:46 a.m. September 11, 2001). The FAA is asked to provide an update, but its line is silent as the agency has not yet been added to the call (see (9:29 a.m.-12:00 p.m.) September 11, 2001). A minute later, Leidig states that it has just been confirmed that Flight 11 is still airborne and is heading toward Washington, DC. (This incorrect information apparently arose minutes earlier during a conference call between FAA centers (see 9:21 a.m. September 11, 2001).) [9/11 Commission, 7/24/2004, pp. 37] NMCC conference calls are moderated by the DDO. [9/11 Commission, 7/21/2003 pdf file] Leidig will tell the 9/11 Commission that they are conducted over “a special phone circuit, and it’s classified to be able to pass information, relay information between very senior leadership all the way over to the White House.” [9/11 Commission, 6/17/2004]
NMCC Struggled to Convene Conference - Some officers currently on duty in the NMCC will later complain about circumstances that delayed the establishing of the significant event conference. Chambers will recall that the conference took “much longer than expected to bring up.” [US Department of Defense, 9/2001] Gardner will tell the 9/11 Commission that the NMCC had been “struggling to build the conference,” which “didn’t get off as quickly as hoped.” [9/11 Commission, 5/5/2004] He will describe his “frustration that it wasn’t brought up more quickly.” [9/11 Commission, 5/12/2004]
Other Conference and Connection Problems Delayed Call - Preparations for the conference were disrupted as a result of the CIA convening a National Operations and Intelligence Watch Officer Network (NOIWON) conference call between government agencies in the Washington area, reportedly at sometime between 9:16 a.m. and 9:25 a.m. (see (Between 9:16 a.m. and 9:25 a.m.) September 11, 2001). According to a 9/11 Commission memorandum, the NMCC had “abandoned its attempt to convene a [significant event conference] so its watch officers could participate in the NOIWON conference.” [Federal Aviation Administration, 9/11/2001; Federal Aviation Administration, 9/11/2001; 9/11 Commission, 7/21/2003 pdf file] Another factor that slowed attempts to convene the significant event conference was a problem with connecting some agencies to it. According to Chambers, “A couple of the civil agencies couldn’t be reached and others kept dropping off moments after connecting.” He will recall, “We finally decided to proceed without those agencies that were having phone problems.” [US Department of Defense, 9/2001] Leidig had announced that the NMCC would have to start without those agencies and add them to the conference later on. [9/11 Commission, 5/12/2004]
Call Ends after Five Minutes - The significant event conference ends after only a few minutes, following a recommendation by NORAD that it be reconvened as an “air threat conference.” It is brought to an end at around 9:34 a.m., and will resume as an air threat conference at 9:37 a.m. (see 9:37 a.m.-9:39 a.m. September 11, 2001). [9/11 Commission, 4/29/2004 pdf file; 9/11 Commission, 7/24/2004, pp. 37]

Entity Tags: Charles Leidig, Federal Aviation Administration, Val Harrison, Patrick Gardner, Charles Chambers, North American Aerospace Defense Command, National Military Command Center

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

William Douglas Crowder.William Douglas Crowder. [Source: US Navy]A senior Navy officer at the Pentagon is told in a phone call that another hijacked aircraft is heading toward Washington, DC, and yet he tells a colleague who also receives this news to keep the information to himself. [US Naval Historical Center, 10/10/2001] Rear Admiral William Douglas Crowder is the executive assistant to Admiral William Fallon, the vice chief of naval operations. [US Department of Defense, 9/26/2001; Proceedings, 9/2002] He is working in Fallon’s office, on the fourth floor of the Pentagon’s E-ring. [US Naval Historical Center, 10/10/2001; Washington Post, 11/17/2006] Fallon is currently down the hall, in the office of Admiral Vern Clark, the chief of naval operations. Those in Fallon’s office are aware of the attacks on the World Trade Center, and have speculated that if this is an organized attack, then Washington, and specifically the Pentagon, is a likely target (see (8:48 a.m.-9:03 a.m.) September 11, 2001).
Crowder Told of Plane Approaching Washington - Crowder now answers a call from the Navy Command Center, which is on the first floor of the Pentagon’s southwest face. His deputy, Commander David Radi, listens in on the call, as he is required to. Captain William Toti, the special assistant to the vice chief of naval operations, will later describe what Crowder is told. Toti will recall, “I was not listening in, but the gist of the conversation was there’s another airplane that’s been hijacked that’s heading towards Washington.” [US Naval Historical Center, 10/10/2001] (An intelligence unit located within the Navy Command Center was recently notified of “indications of another aircraft that’s been hijacked” and that is “heading out to DC” (see Shortly Before 9:37 a.m. September 11, 2001). [Daily Telegraph, 9/11/2002] ) Crowder replies to the caller, “Okay, got it.”
Crowder Instructs Deputy to Keep Information Secret - Radi appears afraid. Presumably referring to the office staff’s prediction of a possible attack on the Pentagon, he says: “Holy sh_t. Captain Toti, it’s coming true.” Crowder runs out of the office to go and tell Fallon what he has just learned. But as he is heading out, he calls back to Radi: “That’s close hold. Don’t tell anybody what you just heard.” Toti will comment, “Remember that Crowder and Radi are the only two people who heard” about the approaching hijacked plane. Just then, the Pentagon is hit: “Not 30 seconds after Crowder hangs up and runs out the door,” Toti will recall, “we hear the airplane, the jet engines, and feel impact. The building shook like an earthquake. We heard the explosion.” [US Naval Historical Center, 10/10/2001] No steps have been taken to evacuate the Pentagon or alert its workers before the building is hit (see Before 9:37 a.m. September 11, 2001). [Vogel, 2007, pp. 429]
Officer Finds Crowder's Order 'Peculiar' - In an interview a month later, Toti will reflect: “In retrospect, I wonder what the hell was close hold about that fact that there was a hijacked airplane coming in towards the Pentagon. If anything, it would have been nice to alert people of that.” He will add that he has not asked Crowder “why he said that,” but says Crowder’s instruction to Radi “stuck out in [my] mind at the time as kind of a peculiar thing to say.”
Officer Told Not to Go to Command Center - Toti’s life is likely saved because, just before the call about the approaching plane is received, Crowder told him not to go to the Navy Command Center—a part of the Pentagon that suffers serious damage when the building is hit. After seeing the burning WTC on television, Toti had been uncomfortable that his office had not received any information about what was going on from the Command Center. After “a few minutes of hearing nothing,” he had suggested to Crowder “that I go to the ops center to see if they had any information we should pass to senior Navy leadership.” But, as Toti was heading out the door toward the Command Center, Crowder instructed him: “Wait, give them another minute. If they don’t call by then, you can go down.” Toti therefore returned to his desk. “Just then,” Toti will recall, Crowder receives the call from the Command Center about the hijacked plane approaching Washington. [US Naval Historical Center, 10/10/2001; Proceedings, 9/2002] Much of the Navy Command Center is destroyed when the Pentagon is hit (see 9:37 a.m. September 11, 2001), and 42 of the 50 people working in it are killed. [Washington Post, 1/20/2002; National Defense Magazine, 6/2003] Toti will say that Crowder “probably saved my life.” [US Naval Historical Center, 10/10/2001]

Entity Tags: David Radi, William J. Toti, William Douglas Crowder

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

According to most accounts, at the time the Pentagon is hit, Defense Secretary Donald Rumsfeld is in his office on the third floor of the Pentagon’s outer E Ring, receiving his daily intelligence briefing. [New York Times, 9/12/2001; Woodward, 2002, pp. 24; 9/11 Commission, 3/23/2004; Clarke, 2006, pp. 221; Cockburn, 2007, pp. 1; Goldberg et al., 2007, pp. 130; Vogel, 2007, pp. 438-439] As he later recalls, “the building shook and the tables jumped.” [Goldberg et al., 2007, pp. 130] Although he has been informed of the two aircraft hitting the World Trade Center (see Shortly After 8:46 a.m. September 11, 2001 and (Shortly After 9:03 a.m.) September 11, 2001), he supposedly does not initially suspect a plane has hit the Pentagon, thinking instead that a bomb has gone off. [ABC News, 9/16/2001; MSNBC, 9/30/2001; Washington Post, 1/9/2002] In his nearby office, Rumsfeld’s senior military assistant Vice Admiral Edmund Giambastiani Jr. also hears the explosion, and walks through his doorway toward Rumsfeld’s office. As the two meet, Rumsfeld asks Giambastiani, “What the hell’s happening?” [American Forces Press Service, 9/8/2006; Goldberg et al., 2007, pp. 130] Rumsfeld then looks out his window but, he later recalls, sees “nothing here.” [Parade Magazine, 10/12/2001; Washington Post, 1/9/2002] He goes into the hallway and, accompanied by his security guards, hurries toward the crash site (see 9:38 a.m. September 11, 2001). [Goldberg et al., 2007, pp. 130] However, counterterrorism “tsar” Richard Clarke will later contradict these accounts. Clarke indicates that Rumsfeld has been participating in the video teleconference conducted from the White House Situation Room since shortly after the second WTC crash (see (9:10 a.m.) September 11, 2001). He claims that Rumsfeld is still involved in this conference at the time the Pentagon is hit, and he tells his deputy, “I can still see Rumsfeld on the screen, so the whole building didn’t get hit.” [Clarke, 2004, pp. 2-3 and 7-8] If Clarke’s account were correct, this would presumably mean Rumsfeld is in the Pentagon’s Executive Support Center (ESC), which has secure video facilities, rather than in his office. [Washington Times, 2/23/2004] But according to other accounts, Rumsfeld does not go to the ESC until around 10:15 a.m., after he returns from the crash site (see (10:00 a.m.-10:30 a.m.) September 11, 2001). [Clarke, 2006, pp. 221; Cockburn, 2007, pp. 1-5]

Entity Tags: Richard A. Clarke, Donald Rumsfeld, Edmund Giambastiani

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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

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

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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

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

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

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

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

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Yaron Shmuel, one of the five Israelis found in the van.Yaron Shmuel, one of the five Israelis found in the van. [Source: Public domain via Israeli television]The FBI issues a BOLO (be on lookout) bulletin for three suspicious men who were seen leaving the New Jersey waterfront minutes after the first hijacked plane hit the WTC (see Shortly After 8:46 a.m. September 11, 2001). Law enforcement officers in the greater New York City area are warned in a radio dispatch to watch for a “vehicle possibly related to New York terrorist attack.” The bulletin reads, in part: “White, 2000 Chevrolet van…with ‘Urban Moving Systems’ sign on back seen at Liberty State Park, Jersey City, NJ, at the time of first impact of jetliner into World Trade Center…. Three individuals with van were seen celebrating after initial impact and subsequent explosion. FBI Newark Field Office requests that, if the van is located, hold for prints and detain individuals.” The van is located a short time later and five men inside it are arrested (see 3:56 p.m. September 11, 2001). [CounterPunch, 2/7/2007]

Entity Tags: Yaron Shmuel, Sivan Kurzberg, Oded Ellner, Federal Bureau of Investigation, Urban Moving Systems, Omer Marmari, Paul Kurzberg

Timeline Tags: Complete 911 Timeline, 9/11 Timeline

Explosives on a chipExplosives on a chip [Source: Gary Meek/Georgia Institute of Technology]According to an article published in The Environmentalist, a peer-reviewed scientific journal published by Springer Netherlands, air quality data collected by the Environmental Protection Agency (EPA) at Ground Zero support the hypothesis that cutting charges made with thermite were used to demolish the World Trade Center. The article by authors (and 9/11 truth activists) Kevin Ryan, James Gourley, and Steven Jones says the presence of thermite would best explain three major documented anomalies: [Ryan, Gourley, and Jones, 8/4/2008]
1) The Persistence of Fires at Ground Zero - As has been extensively reported, the rubble at Ground Zero continued to burn for months after 9/11, despite rain as well as firefighters’ use of large quantities of water and of the chemical fire suppressant Pyrocool. [New York Times, 11/19/2001] There is also eyewitness and photographic evidence of molten metal (see September 12, 2001-February 2002) and of explosions accompanied by white dust clouds. The book Aftermath: World Trade Center Archive by photographer Joel Meyerowitz shows a picture of such an explosion taking place on November 8, 2001. [Meyerowitz, 2006, pp. 178] Another photography books by NYPD officer John Botte also shows a picture of smoke emerging from the pile at Ground Zero and explains: “Occasionally, a huge flame would shoot out from the middle of the pile, sounding like a blow torch, as it did here.” [Botte, 2006, pp. 48-49]
2) Spikes of Certain Chemicals in the Air - EPA data shows that several spikes of chemical products of combustion, called volatile organic chemicals (VOC), occurred in October and November 2001, and in February 2002. According to the authors, these spikes indicate “abrupt, violent fires.”
3) The Presence of 1,3-Diphenylpropane - A third anomaly was the presence of large quantities of 1,3-diphenylpropane (1,3-DPP) in the air, a chemical that had not been found in previous structure fires. An EPA scientist told Newsday, “We’ve never observed it in any sampling we’ve ever done.” [Newsday, 9/14/2003]
A possible explanation would be the presence of novel “energetic nanocomposites” which include 1,3-DPP, according to scientific articles reviewed by Ryan et al. Such materials are “amenable to spray-on applications.” A 2002 report said: “The energetic coating dries to give a nice adherent film. Preliminary experiments indicate that films of the hybrid material are self-propagating when ignited by thermal stimulus.” [Ryan, Gourley, and Jones, 8/4/2008] The main center for nanocomposites research is Lawrence Livermore National Laboratory (LLNL). An October 2000 article in a LLNL publication provided an introduction to the research conducted there: “Energetic nanocomposites have a fuel component and an oxidizer component mixed together. […] In one such material (termed a thermite pyrotechnic), iron oxide gel reacts with metallic aluminum particles to release an enormous amount of heat. ‘These reactions typically produce temperatures in excess of 3,500 degrees Celsius’ says [LLNL researcher Randy] Simpson.” [Science & Technology Review, 10/2000] The authors conclude that “[t]he presence of energetic materials, specifically energetic nanocomposites, at [Ground Zero], has the potential to explain much of the unusual environmental data seen at the WTC. Thermite […] is such a pyrotechnic mixture that cannot be easily extinguished and is a common component of energetic nanocomposites.… [T]he detection of 1,3-DPP at the WTC supports this hypothesis. Finally, the spikes in VOCs, detected by EPA on specific dates, are more readily explained as a result of short-lived, violent fires caused by energetic materials.” [Ryan, Gourley, and Jones, 8/4/2008]

Entity Tags: Steven E. Jones, James R. Gourley, Environmental Protection Agency, Kevin Ryan

Timeline Tags: Complete 911 Timeline

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