An officer at NORAD’s operations center in Cheyenne Mountain, Colorado, calls NORAD’s Northeast Air Defense Sector (NEADS) and asks it to stop “exercise inputs” being sent to the operations center.
NORAD Calls Chief of Exercises at NEADS – The NORAD officer, a “Captain Taylor,” calls NEADS, where the phone is answered by Captain Brian Nagel. [North American Aerospace Defense Command, 9/11/2001] Nagel is chief of NEADS live exercises. [Filson, 2003, pp. 74] After introducing himself, Taylor says, “What we need you to do right now is to terminate all exercise inputs coming into Cheyenne Mountain.” Nagel gives Taylor an extension number and suggests that he call it to get the exercise inputs stopped. Taylor replies, “I’ll do that.” [North American Aerospace Defense Command, 9/11/2001] According to an article in Vanity Fair, “inputs” are simulated scenarios that are put into play for training exercises. [Vanity Fair, 8/1/2006] NORAD has been conducting a major exercise this morning called Vigilant Guardian (see (6:30 a.m.) September 11, 2001). [Arkin, 2005, pp. 545]
Exercise Includes Simulated Radar Information – Taylor is presumably referring specifically to false tracks that have been transmitted onto NORAD radar screens for the exercise. NORAD has the capability to inject simulated material, including mass attacks, into the system during exercises, “as though it was being sensed for the first time by a radar site.” [US Department of Defense, 1/15/1999] All of the operations personnel at NEADS have been instructed to “have their sim switches turned ‘on’” (presumably to allow simulated information to appear on their radar screens) from September 6 until the end of Vigilant Guardian, on September 13. An information page on the exercise stated that a “sim test track will be in place and forward told [i.e. transferred to a higher level of command] to both NORAD and CONR,” NORAD’s Continental United States Region. [Northeast Air Defense Sector, 8/23/2001]
Exercise Supposedly Called Off Earlier – More than 50 members of the battle staff at the NORAD operations center have been participating in Vigilant Guardian this morning. [Airman, 3/2002; 9/11 Commission, 3/1/2004 
] Some accounts will claim this exercise was canceled shortly after 9:03 a.m., when the second World Trade Center tower was hit (see (Shortly After 9:03 a.m.) September 11, 2001). [Airman, 3/2002; Filson, 2003, pp. 59] And a report in the Toronto Star will state, “Any simulated information” for the exercise was “purged from the [radar] screens” at the operations center shortly before the second tower was hit (see (9:00 a.m.) September 11, 2001). [Toronto Star, 12/9/2001] But a member of staff at NEADS complained at 9:30 a.m. about simulated material still appearing on radar screens there, and at 9:34 a.m. the NEADS surveillance technicians were instructed to turn off their “sim switches” (see 9:34 a.m. September 11, 2001). [North American Aerospace Defense Command, 9/11/2001; North American Aerospace Defense Command, 9/11/2001; 9/11 Commission, 2004]
10:12 a.m. September 11, 2001: Syracuse Fighter Jets Still Not Ready to Launch
Someone from the 174th Fighter Wing, which is based at Hancock Field Air National Guard Base near Syracuse, NY, calls NORAD’s Northeast Air Defense Sector (NEADS) and speaks with Major Kevin Nasypany, the mission crew commander there. [North American Aerospace Defense Command, 9/11/2001] Earlier on, shortly after seeing the second plane hitting the World Trade Center at 9:03, a commander of the 174th Fighter Wing called NEADS to offer fighter jets to help (see (After 9:03 a.m.) September 11, 2001). They’d said: “Give me ten [minutes] and I can give you hot guns. Give me 30 [minutes] and I’ll have heat-seeker [missiles]. Give me an hour and I can give you slammers.” [Aviation Week and Space Technology, 6/3/2002; News 10 Now, 9/12/2006] Yet, now, more than an hour after the second attack, these fighters have still not been launched. Syracuse tells Nasypany, “I’ve got guys that’ll be launching in about 15 minutes.” Despite the earlier promise to have heat-seekers and slammers on the planes, Syracuse says: “We’ve got hot guns. That’s all I’ve got.” Nasypany says: “I’ve got another possible aircraft with a bomb on board. It’s in Pennsylvania, York, approximate area.” He adds that there is “another one, that’s possibly at Cleveland area.” These aircraft, he says, are United Airlines Flight 93 and Delta ‘89, respectively. (Although Flight 93 has already crashed, NEADS apparently does not learn of this until 10:15 (see 10:15 a.m. September 11, 2001).) NEADS was alerted to Delta Flight 1989 at 9:41, and mistakenly suspects it has been hijacked (see 9:39 a.m. September 11, 2001). Syracuse says: “I’ve got two jets right now. Do you need more than two?” After NEADS requests another two, Syracuse replies, “Get four set up, yep.” [North American Aerospace Defense Command, 9/11/2001] According to the Syracuse Post-Standard, the first fighters to launch from Hancock Field are two F-16s that take off at 10:42 a.m. A further three take off at about 1:30 p.m., and two more launch around 3:55 p.m. (see 10:42 a.m. September 11, 2001). [Post-Standard (Syracuse), 9/12/2001]
10:13 a.m. September 11, 2001: Washington Buildings Evacuate
More prominent buildings in Washington begin evacuation. The United Nations building in New York City evacuates first; many federal buildings follow later. [CNN, 9/12/2001; New York Times, 9/12/2001] Counterterrorism “tsar” Richard Clarke apparently began arranging these evacuations a short time before this. [Clarke, 2004, pp. 14-15]
10:13 a.m.-10:23 a.m. September 11, 2001: Projected Flight 93 Arrival into Washington; Could It Have Been Shot Down?
The 9/11 Commission later concludes that if Flight 93 had not crashed, it would probably have reached Washington around this time. The commission notes that there are only three fighters over Washington at this time, all from Langley, Virginia. However, the pilots of these fighters were never briefed about why they were scrambled. As the lead pilot explained, “I reverted to the Russian threat… I’m thinking cruise missile threat from the sea. You know, you look down and see the Pentagon burning and I thought the b_stards snuck one by us.… You couldn’t see any airplanes, and no one told us anything.” The pilots knew their mission was to identify and divert aircraft flying within a certain radius of Washington, but did not know that the threat came from hijacked planes. In addition, the commission notes that NEADS did not know where Flight 93 was when it crashed, and wonders if they would have determined its location and passed it on the pilots before the plane reached Washington. They conclude, “NORAD officials have maintained that they would have intercepted and shot down United 93. We are not so sure.” [9/11 Commission, 6/17/2004]
10:13 a.m. September 11, 2001: President’s Military Aide Requests Fighter Escort for Air Force One
Lieutenant Colonel Thomas Gould, a military aide who is accompanying President Bush on his visit to Florida, makes a call requesting a fighter escort and other assets to support Air Force One as it flies away from Sarasota. Gould, who has tactical control of all the military assets that support the president, including presidential aircraft, was with Bush on Air Force One when the plane took off from Sarasota-Bradenton International Airport (see 9:54 a.m. September 11, 2001). He has talked with Colonel Mark Tillman, Air Force One’s pilot, about the plane’s ability to evade other aircraft. “At this point we don’t know the scope of this attack and what’s in front of us,” Gould will later recall. Gould will say that because he “thought there was a threat,” he makes a phone call and asks for three things: fighter jets to escort Air Force One, a refueling plane, and an AWACS (Airborne Warning and Control System plane) to provide the ability to “see” around the president’s plane.
Request Relayed over Conference Call – Gould will say, in 2011, that he calls the Pentagon to make this request. [Lompoc Record, 9/11/2011; Santa Barbara News-Press, 9/11/2011] However, other evidence indicates that he contacts the Presidential Emergency Operations Center (PEOC) below the White House with the request, and the request is then passed on to the Pentagon over the air threat conference call. A transcript of the air threat conference call shows that at 10:14 a.m., Colonel Michael Irwin, the director of operations for the White House Military Office, who is in the PEOC, says he has “just talked to [the] mil aide” on Air Force One, and then adds: “We’d like AWACS over Louisiana. We’d like fighter escort.” [US Department of Defense, 9/11/2001 ]
Fighters and AWACS Later Accompany Air Force One – An AWACS on a training mission off the coast of Florida is directed toward Air Force One and will accompany it all the way to Washington, DC (see Before 9:55 a.m. September 11, 2001). [Code One Magazine, 1/2002] Fighters will also arrive to escort the president’s plane. However, it will be over an hour before they reach it (see (11:29 a.m.) September 11, 2001). [USA Today, 9/11/2001] It is unclear if and when a refueling plane reaches Air Force One.
10:14 a.m. September 11, 2001: First of Three Fighters Returning from Training Lands at Base near Washington, but Does Not Take Off Again
The first of three District of Columbia Air National Guard F-16s that was away on a training mission at the time of the attacks in New York lands back at its base just outside Washington, DC, but does not take off again to defend the capital. The fighter jet is being piloted by Eric Haagenson. [9/11 Commission, 2004; 9/11 Commission, 2/17/2004; 9/11 Commission, 2/27/2004] It belongs to the 121st Fighter Squadron, part of the 113th Wing of the DC Air National Guard, which is based at Andrews Air Force Base, 10 miles from Washington. [District of Columbia Air National Guard, 7/24/2001; Aviation Week and Space Technology, 9/9/2002; GlobalSecurity (.org), 8/21/2005] Along with two other jets, it took off from Andrews at 8:36 a.m. for a routine training mission about 200 miles away, over North Carolina (see 8:36 a.m. September 11, 2001).
Denied Entry into Andrews Airspace – Haagenson apparently headed back to base earlier than the other aircraft with him over North Carolina because he was so low on fuel. Major Billy Hutchison, the flight lead of the F-16s on the training mission, learned over radio that Haagenson was then “being denied entry to airspace over Andrews” Air Force Base. [9/11 Commission, 2/17/2004; 9/11 Commission, 2/27/2004; 9/11 Commission, 3/8/2004 ] This was presumably because airspace restrictions had been implemented around Washington: The supervisor of flying with Haagenson’s unit had been concerned that such restrictions would be put into effect after he’d learned of the second attack on the World Trade Center. [Spencer, 2008, pp. 122-123] Hutchison therefore instructed Haagenson to go to Pawtucket, Rhode Island (presumably to land at an airfield there), because he was so low on fuel, so that he would not run out. [9/11 Commission, 2/27/2004] But by 10:14 a.m., Haagenson has been cleared to land at Andrews, and touches down at the base. [9/11 Commission, 2/17/2004]
Haagenson Does Not Take Off Again – Hutchison will later recall that Haagenson “didn’t go back up” into the air after landing at Andrews, “because he was a brand new pilot.” The training mission he returned from “was his first flight outside an instructional arena.” The other two F-16s that were with him, piloted by Hutchison and Lou Campbell, will land at Andrews at 10:36 a.m., but Hutchison will be instructed to take off again immediately (see (10:38 a.m.) September 11, 2001). [Aviation Week and Space Technology, 9/9/2002; 9/11 Commission, 2/17/2004; 9/11 Commission, 2/27/2004]
10:14 a.m.-10:19 a.m. September 11, 2001: White House Informs NMCC that Cheney Has Given Shootdown Authorization
A lieutenant colonel at the White House repeatedly relays to the National Military Command Center (NMCC) at the Pentagon that Vice President Dick Cheney has confirmed that fighter jets are cleared to engage an inbound aircraft if they can verify that the aircraft is hijacked. The lieutenant colonel notifies the NMCC of the authorization over the air threat conference call (see 9:29 a.m.-9:34 a.m. September 11, 2001). Cheney, who is in the Presidential Emergency Operations Center (PEOC) below the White House, said at sometime between 10:10 and 10:15 that fighters could engage an aircraft that was reportedly approaching Washington (see (Between 10:10 a.m. and 10:18 a.m.) September 11, 2001). However, it is only when Cheney calls President Bush at 10:18 a.m. that Bush confirms the shootdown order (see 10:18 a.m.-10:20 a.m. September 11, 2001). The shootdown order will be received by NORAD, and then, at 10:31 a.m., sent out to its three air defense sectors in the continental US (see 10:31 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 41-42; Spencer, 2008, pp. 240]
10:15 a.m. September 11, 2001: NORAD Operations Center in Colorado Closes Its Blast Doors
The massive doors leading to NORAD’s operations center in Cheyenne Mountain, Colorado, designed to protect the center from a nuclear blast, are closed for the first time ever in a real-world, non-exercise event, though the reason for this is unclear. [Toronto Star, 12/9/2001; Aviation Week and Space Technology, 6/3/2002; BBC, 9/1/2002; North American Aerospace Defense Command, 9/9/2011] The two steel blast doors, one third of a mile inside the mountain, guard the heart of NORAD’s Cheyenne Mountain Operations Center (CMOC) and are intended to seal the complex to protect it from a nuclear strike. The doors are three feet thick, more than 10 feet high, and each weigh 25 tons. During an attack, they can swing shut in 30 to 40 seconds. [Airman, 1/1996; Nation, 5/5/2008; Colorado Springs Gazette, 5/10/2008]
Doors Are Shut for the First Time, except for Exercises – Air Force officer William Astore will later recall that when he worked inside Cheyenne Mountain between 1985 and 1988, the blast doors were kept open, “except, of course, during ‘exercises,’ when the mountain ‘buttoned up’ its self-contained world.” [Nation, 5/5/2008] Now is the first time since the CMOC opened in 1966 that the blast doors have been shut because of a real-world, non-exercise event. Lieutenant Colonel Steven Armstrong, NORAD’s chief of plans and forces, who is in the CMOC on this day, will later comment, “The fact that we closed the blast doors… was a significant event.” [Toronto Star, 12/9/2001; Colorado Springs Gazette, 6/14/2004; North American Aerospace Defense Command, 9/9/2011]
Accounts Conflict over Why the Doors Are Closed – The reason the blast doors are shut is unclear. According to the Toronto Star, they are closed because “no one yet knew who was behind the attack—or what else might be en route.” [Toronto Star, 12/9/2001] But Aviation Week and Space Technology magazine will report that “NORAD commanders ordered [the] massive steel doors be closed” after “someone—possibly President Bush—ordered the military to a Force Protection Condition Delta wartime posture” (see (Between 10:10 a.m. and 10:35 a.m.) September 11, 2001). [Aviation Week and Space Technology, 6/3/2002] Other reports will say the doors are shut due to a report the CMOC received about an aircraft that is incorrectly suspected of being hijacked and targeting Cheyenne Mountain (see (10:10 a.m.) September 11, 2001). [BBC, 9/1/2002; Grant, 2004, pp. 26; Colorado Springs Gazette, 6/14/2004; Washington Post, 7/29/2006] A NORAD representative on the Pentagon’s air threat conference call will report over the conference call that the blast doors are in fact shut in response to information received at the CMOC about a number of suspicious trucks that are supposedly heading toward the CMOC (see (Shortly After 1:05 p.m.) September 11, 2001). [US Department of Defense, 9/11/2001 ]
Doors Are Re-Opened Four Hours Later – The blast doors will be re-opened four hours after they are shut, “when officials learned the threat was bogus,” according to the Colorado Springs Gazette. [Colorado Springs Gazette, 6/14/2004]
10:15 a.m. September 11, 2001: Air Traffic Controller Mistakenly Reports that First Aircraft to Hit WTC Was a Helicopter
Tom White, a New York air traffic controller, incorrectly reports over an FAA teleconference that the first aircraft to hit the World Trade Center appears to have been a Sikorsky helicopter. [Federal Aviation Administration, 9/11/2001; Federal Aviation Administration, 1/2/2002; 9/11 Commission, 5/21/2004] White is an operations manager at the FAA’s New York Terminal Radar Approach Control (TRACON) in Westbury, Long Island. [9/11 Commission, 12/15/2003 ] He says over the FAA teleconference that the Sikorsky helicopter had been heading south from Poughkeepsie, New York, and appeared to hit the WTC at 8:27 a.m. (see 8:27 a.m. September 11, 2001)—nearly 20 minutes before the first crash there actually took place (see 8:46 a.m. September 11, 2001).
TRACON Previously Said Small Plane Hit the WTC – About 20 minutes earlier, someone from the TRACON—presumably White—suggested over the teleconference that the first aircraft to hit the WTC was a small twin-engine plane. At around 9:55 a.m. they said: “I think we’ve identified the location of a departure point for aircraft number one [presumably a reference to the plane that hit the North Tower]. At approximately 12:03 Zulu time [i.e. 8:03 a.m. Eastern time], aircraft number one appears to have departed Poughkeepsie airport and established a southerly heading at a speed of about 160 knots [i.e. 184 miles per hour]. The profile looks like it might be a light twin.” Asked if they had any more information, the TRACON employee replied: “I tried to get in touch with Poughkeepsie tower. However, the phone lines are overloaded and the circuits are busy.” [Federal Aviation Administration, 9/11/2001] The “Poughkeepsie airport” the helicopter took off from is presumably Dutchess County Airport. Sikorsky bases a fleet of its S-76 helicopters at Dutchess County Airport, which it dispatches to the New York metro areas as needed. [Site Selection, 5/2000; Aviation International News, 8/1/2003] Poughkeepsie is about 70 miles north of New York City. [Pittsburgh Post-Gazette, 2/3/2008]
Radar Information Suggests Helicopter Hit WTC – White now gives an update over the FAA teleconference, and suggests the first aircraft to hit the WTC was in fact a helicopter. He says: “We tracked a Sikorsky helicopter… from Poughkeepsie to the Trade Center. It appeared to fly into the Trade Center at 12:27 [Zulu time, or 8:27 a.m. Eastern time]. That is preliminary information.” White then clarifies that this conclusion has been reached partly through replaying radar data. He says: “[T]he only target that we saw in the vicinity of the Trade Center at 12:27, to fly into the Trade Center, we, we played the radar and tracked it up through Westchester and Stewart. We had a departure off a Poughkeepsie at 12:03. The tower says the only thing they had southbound at that time was a Sikorsky helicopter, which is consistent with the speed that we followed it down.” [Federal Aviation Administration, 9/11/2001; Federal Aviation Administration, 9/11/2001]
Long Delay before False Information Is Corrected – The New York TRACON’s reports about a helicopter or small plane hitting the WTC are subsequently confirmed to be mistaken. However it apparently takes several hours before the erroneous information is corrected. David LaCates, the deputy operations manager at the FAA’s New York Center, will tell the 9/11 Commission that “he did hear rumors that the aircraft that struck the WTC was in fact a small airplane from Poughkeepsie,” and he “believes this rumor persisted for over an hour.” [9/11 Commission, 10/2/2003 ] According to one FAA chronology of this day’s events, it is only at 1:00 p.m. that the “Sikorsky helicopter” is “now believed not to have hit the WTC.” [Federal Aviation Administration, 1/2/2002] Another FAA chronology will state that at 1:04 p.m. it is reported that the Sikorsky helicopter “landed 20 minutes early, normal GE run at 12:28Z [i.e. 8:28 a.m. Eastern time] to WTC.” (It is unclear what is meant by “normal GE run.”) [Federal Aviation Administration, 9/11/2001]
After 10:14 a.m. September 11, 2001: Joint Chiefs Vice Chairman Myers Fails to Tell NORAD about Vice President Cheney’s Shootdown Authorization
General Richard Myers, vice chairman of the Joint Chiefs of Staff, apparently fails to tell NORAD about Vice President Dick Cheney’s authorization for the military to shoot down suspicious aircraft. Myers has been in the National Military Command Center (NMCC) at the Pentagon since around 9:58 a.m. (see (9:58 a.m.) September 11, 2001). [US Department of Defense, 9/11/2001 ; 9/11 Commission, 2/17/2004 ] At some unspecified time after reaching the NMCC, he begins a phone call with General Ralph Eberhart, the commander of NORAD, who is at NORAD’s Cheyenne Mountain Operations Center (CMOC) in Colorado, in which the two men discuss “rules of engagement” for fighter pilots (see (Between 10:15 a.m. and 10:30 a.m.) September 11, 2001). [9/11 Commission, 3/1/2004 ; George C. Marshall European Center for Security Studies, 8/3/2012] Cheney, meanwhile, gave the military authorization to shoot down a suspicious aircraft that was approaching Washington, DC, shortly after 10:10 a.m. (see (Between 10:10 a.m. and 10:18 a.m.) September 11, 2001), and personnel in the NMCC are told about this over the air threat conference at 10:14 a.m. and again at 10:19 a.m. (see 10:14 a.m.-10:19 a.m. September 11, 2001). [US Department of Defense, 9/11/2001 ; 9/11 Commission, 7/24/2004, pp. 41-42]
Myers Will Be Unable to Recall Discussing Cheney’s Authorization – However, Myers apparently fails to tell Eberhart about it. When asked by the 9/11 Commission in 2004 whether he communicated with NORAD “to inform them of the vice president’s authorization and ensure that they understood their instructions,” he will give a confused and inexplicit answer. “To the best I can recall, I’m not sure I didn’t have that conversation with Eberhart on this,” he will reply. “I don’t remember… that being a simple issue we worked our way through,” he will add. [9/11 Commission, 2/17/2004 ] Eberhart will imply that Myers fails to tell him about Cheney’s shootdown authorization when he is interviewed by the 9/11 Commission. He will recall being told about Cheney’s authorization not by Myers but by Major General Rick Findley, NORAD’s director of operations, sometime after around 10:15 a.m., when he arrives at the CMOC. [9/11 Commission, 3/1/2004 ; 9/11 Commission, 3/1/2004]
Myers Does Not Hear of Cheney’s Authorization on the Conference Call – Furthermore, Myers will be unable to recall whether he is even monitoring the air threat conference when Cheney’s shootdown authorization is reported over it. He will be under the mistaken impression that Cheney only gives the authorization after Secretary of Defense Donald Rumsfeld joins him in the NMCC, at around 10:30 a.m. (see (10:30 a.m.) September 11, 2001). “My recollection is that before we got the vice president’s authorization, the secretary [of defense] and I had this conversation and I made him aware of the authorization we were going to need if we had [a hijacked] aircraft coming in,” he will tell the 9/11 Commission. [9/11 Commission, 2/17/2004 ] And yet in his 2009 memoir, Myers will contradict what he told the 9/11 Commission and describe hearing Cheney’s shootdown authorization being reported over the air threat conference. “Vice President Cheney has forwarded the president’s authorization to go weapons free if that plane [that is approaching Washington] is confirmed hijacked and threatens the White House or the Capitol,” he will recall hearing a military aide at the White House saying. [Myers and McConnell, 2009, pp. 152]
