Based on an analysis of radar data for Flight 77 as it approaches the Pentagon and makes a 330 degree loop (see 9:34 a.m.- 9:37 a.m. September 11, 2001), experts will later say that the plane is being flown so smoothly that “it’s clear there [is] no fight for control going on.” [CBS News, 9/21/2001; Boston Globe, 11/23/2001] The plane gets near the White House during this turn. “Sources say the hijacked jet… [flies] several miles south of the restricted airspace around the White House.” [CBS News, 9/21/2001] The Daily Telegraph will later write: “If the airliner had approached much nearer to the White House it might have been shot down by the Secret Service, who are believed to have a battery of ground-to-air Stinger missiles ready to defend the president’s home. The Pentagon is not similarly defended.” [Daily Telegraph, 9/16/2001] White House spokesman Ari Fleischer will suggest the plane goes even closer to the White House, saying, “That is not the radar data that we have seen. The plane was headed toward the White House.” [CBS News, 9/21/2001 Sources: Ari Fleischer]
9:35 a.m. September 11, 2001: Contractors Evacuate Pentagon Just before It Is Hit
A contract crew has been installing furniture in the southwest perimeter of the Pentagon. Construction workers are currently doing the final touching up, after more than three years of renovation work on this area of the building, and some Defense Department employees are already moving into their new office spaces. But the wife of one crew member phones her husband after seeing footage of the attacks in New York on CNN and says she feels he is in danger at the Pentagon. Hearing of the attacks, the crew leader instructs his 23 workers to abandon what they are doing and evacuate. Moments later, as they are crossing the parking lot, they see the airliner crash into the exact area of the Pentagon they had just left. [Government Executive, 5/1/2002; Freni, 2003, pp. 43-44] There is no evidence that anyone else in the Pentagon evacuates the building before it is struck (see Before 9:37 a.m. September 11, 2001). [Newsday, 9/23/2001] Another report, which appears to be describing the same incident, says the construction crew evacuates for a different reason: to discuss security with a customer in the parking lot. [Pentagram, 9/14/2001]
9:35 a.m.-9:36 a.m. September 11, 2001: Several Witnesses See a Helicopter near the Pentagon
A number of witnesses see a helicopter flying near the Pentagon in the minutes before the attack there. 
Jeffrey Mark Parsons, an assistant chief patrol agent with the United States Border Patrol, sees a blue and white helicopter that appears as if it is coming in to land, from a window on the 17th floor of the hotel he is staying at, near the Pentagon. Parsons will later recall that two or three minutes before the Pentagon attack occurs: “I saw [the helicopter] circle… between the hotel and the Pentagon, going toward the landing pad [at the Pentagon] where that airliner ultimately hit. And I thought that he landed on the pad.” Parsons will say the helicopter flies in at “a weird angle,” and recall that he has been staying at the Marriott Residence Inn in Arlington for almost a month, but has “never seen a helicopter approach the Pentagon from that direction before.” He will recognize the helicopter as a Huey because he has flown Hueys and knows they make “a very distinct sound.” According to John Darrell Sherwood, a Navy historian who interviews Parsons about the incident, the helicopter belongs to the US Park Police and has been instructed to intercept the aircraft that subsequently hits the Pentagon (see Shortly Before 9:35 a.m. September 11, 2001). [US Naval Historical Center, 12/13/2001; Goldberg et al., 2007, pp. 258] A senior Air Force officer who is somewhere outside the Pentagon also sees a helicopter circling the Pentagon around this time, although he believes it to be a US military helicopter. Shortly after the Pentagon attack, the unnamed officer will tell a CNN reporter that the helicopter “disappeared behind the building where the helicopter landing zone is… and he then saw [a] fireball go into the sky” when the Pentagon is hit. [CNN, 9/11/2001] Jennifer Reichert, who is stuck in traffic on Route 27 in front of the Pentagon, will describe that just before the attack, “A helicopter takes off from the heliport at the Pentagon.” She will add: “Minutes—maybe seconds—later, I hear it: American Airlines Flight 77 screams toward the Pentagon. The explosion [of the crash] shakes my car.” [Washington Post, 9/5/2002] Secretary of Defense Donald Rumsfeld and Denny Watson, his CIA briefer, who are in Rumsfeld’s office at the Pentagon, see a helicopter flying very close to the building, outside the window of the office, and then pulling away just before the building is attacked (see Shortly Before 9:37 a.m. September 11, 2001). [Priess, 2016, pp. 244-245]
Perhaps due to the presence of this helicopter in the area, some people will initially think the attack on the Pentagon involves a helicopter hitting the building. Captain William Durm, the commander of the Pentagon’s Triservice Dental Clinic, will head to the building’s center courtyard shortly after the Pentagon is hit. Someone there will tell him a helicopter has hit the other side of the building. [Marble and Milhiser, 9/2004, pp. 11] Some early news reports will suggest a helicopter crashed into the Pentagon. [Thomas Crosbie Media, 9/11/2001; Poynter Institute, 9/2/2002] One report will claim that “one aircraft and a helicopter have crashed into the Pentagon.” [Airline Industry Information, 9/11/2001] Vice President Dick Cheney will tell NBC’s Meet the Press that “the first reports on the Pentagon attack suggested a helicopter” hit the building. [Meet the Press, 9/16/2001] The Guardian will report that one witness claims the explosion that occurs when the Pentagon is hit blows up a helicopter circling overhead. [Guardian, 9/12/2001] New York Times columnist William Safire will report that, at approximately this time, Cheney is told that either another plane or “a helicopter loaded with explosives” is heading for the White House. [New York Times, 9/13/2001]
Shortly Before 9:37 a.m. September 11, 2001: Pentagon Heliport Tower Controllers Concerned about Plane Hitting Pentagon
The air traffic controller and his assistant in the control tower at the Pentagon’s heliport are concerned that they are in a prime location for another terrorist attack, and discuss the possibility of a plane crashing into the Pentagon. [Pentagram, 11/16/2001; Fort Belvoir News, 1/18/2002; Creed and Newman, 2008, pp. 21] The controller, Sean Boger, a civilian who is working for the Army, and his assistant, Army Specialist Jacqueline Kidd, are working in the control tower located between the Pentagon and its heliport, from where they direct helicopter landings and departures. [Goldberg et al., 2007, pp. 27; Creed and Newman, 2008, pp. 21] They have seen the reports on television about the planes hitting the World Trade Center, and so realize that a terrorist attack is taking place. [Pentagram, 11/16/2001; Fort Belvoir News, 1/18/2002]
Controllers Discuss Possibility of Crash at Pentagon – Kidd will later recall that, after seeing the second crash on television, she and Boger begin “discussing the possibility of if it was a terrorist attack, and how we were at a prime spot to be hit. We started talking about that immediately.” She will add that Boger mentions to her that the flight path of Reagan National Airport, which is about a mile away, “comes right by the Pentagon, and I said, ‘Oh, yeah.’ And he said, ‘They can do the same thing to us.’” However, Kidd and Boger reportedly talk “casually” about the possibility of a plane hitting the Pentagon, “without seriously feeling threatened.” [Fort Belvoir News, 1/18/2002] According to other accounts, Boger wonders aloud why no airliner has ever hit the Pentagon, considering how close it is to Reagan Airport. [Goldberg et al., 2007, pp. 27] Kidd tells him, “You’ve been saying that for three years,” and he responds, “Yeah, you’re right.” [Creed and Newman, 2008, pp. 21] Reportedly, Boger is “talking about an accident, not a terrorist attack.” [Pentagram, 11/16/2001]
Controller Discusses Concerns with Supervisor at Airfield – Boger also calls the control tower at Davison Army Airfield, which is about 12 miles south of the Pentagon, around this time, and discusses his concerns with the supervisor of air traffic control there. Boger works for the supervisor’s unit and has already called the supervisor to alert him to the attacks in New York. Boger now tells the supervisor how worried he is “that an aircraft can just easily do that,” presumably referring to the possibility of a plane crashing into the Pentagon. He also says, “I don’t know what I’m going to do if I see a plane coming like that towards—towards us.” The supervisor will later comment, “I always was aware of that, of how close some aircraft would fly over the facility… and how easy it would be for somebody to kind of storm the small tower.” The supervisor tells Boger that if he sees an airplane heading his way, “what you do is you grab [Kidd] and get out of the building, and just go towards Route 27,” the road in front of the heliport area. [US Army Center for Military History, 11/14/2001 
] However, while personnel like Boger, Kidd, and the supervisor of air traffic control are considering the possibility of a plane hitting the Pentagon at this time, no steps are taken to alert workers at the Pentagon before it is struck (see Before 9:37 a.m. September 11, 2001), and an order to evacuate the building will only go out over the Pentagon’s public address system shortly after the attack there. [Goldberg et al., 2007, pp. 137-138; Vogel, 2007, pp. 429]
Pentagon Hit Close to Tower – Boger and Kidd will both suffer minor injuries when the Pentagon is hit less than 100 feet from where they are, and the heliport tower will be badly damaged by the explosion. [US Army Center for Military History, 11/14/2001 ; Fort Belvoir News, 1/18/2002] Kidd will be on the tower’s ground floor, on her way outside to her car, when the crash occurs. [Pentagram, 11/16/2001; Fort Belvoir News, 1/18/2002] Boger will still be up in the tower, and, he will say, sees Flight 77 flying low and fast toward—and then into—the Pentagon. [US Army Center for Military History, 11/14/2001 ; Goldberg et al., 2007, pp. 27]
Before 9:37 a.m. September 11, 2001: Pentagon Not Evacuated Prior to Being Hit
Before the Pentagon is hit, no steps are taken to alert or evacuate the building’s 20,000 employees. Even Defense Secretary Donald Rumsfeld and his top aides are reportedly unaware of a rogue plane heading toward Washington prior to the attack there. [ABC News, 9/16/2001; Newsday, 9/23/2001; Vogel, 2007, pp. 429] Pentagon spokesman Glenn Flood will later try to explain why the Pentagon is not evacuated at this time, saying: “To call for a general evacuation, at that point, it would have been just guessing. We evacuate when we know something is a real threat to us.” He says that an evacuation could have put employees at risk by moving them outside the protection provided by the building’s walls. Another Pentagon spokesman, Air Force Lt. Col. Vic Warzinski, will add, “The Pentagon was simply not aware that this aircraft was coming our way.” [Newsday, 9/23/2001] Yet, as early as 9:21, the FAA warned the military of a hijacked aircraft heading toward Washington (see 9:21 a.m. September 11, 2001 and (9:24 a.m.) September 11, 2001). The National Military Command Center (NMCC), located inside the Pentagon, was aware of this hijacked aircraft by 9:30, according to the 9/11 Commission (see 9:29 a.m.-9:34 a.m. September 11, 2001). [9/11 Commission, 7/24/2004, pp. 26 and 37; Vogel, 2007, pp. 429] The New York Times will in fact report that, since shortly before 9:00 a.m., “military officials in [the NMCC] were urgently talking to law enforcement and air traffic control officials about what to do.” [New York Times, 9/15/2001] The order to evacuate will only go out over the Pentagon’s public address system shortly after the building is hit. [Goldberg et al., 2007, pp. 137-138] The Defense Protective Service, which guards the Pentagon, does not order that the building’s threat level be raised until the time when it is hit (see 9:37 a.m. September 11, 2001). [Goldberg et al., 2007, pp. 151-152]
Before 9:37 a.m. September 11, 2001: Government Departments in Washington Are Not Evacuated Prior to the Pentagon Attack
Government buildings in Washington, DC, are not evacuated prior to the attack on the Pentagon at 9:37 a.m. As CNN will later describe, even after the attacks on the World Trade Center and the FAA’s warning to the military of a hijacked aircraft apparently heading toward Washington (see 9:21 a.m. September 11, 2001 and (9:24 a.m.) September 11, 2001), “the federal government failed to make any move to evacuate the White House, Capitol, State Department, or the Pentagon.” [CNN, 9/16/2001] Although a slow evacuation of the White House begins at around 9:20 a.m. (see (9:20 a.m.) September 11, 2001), it is not until 9:45 a.m. that the Secret Service orders people to run from there (see (9:45 a.m.) September 11, 2001). [CNN, 9/11/2001; CNN, 9/12/2001; ABC News, 9/11/2002] Other government buildings, including the Capitol (see 9:48 a.m. September 11, 2001), the Justice Department, the State Department, and the Supreme Court (see 10:15 a.m. September 11, 2001), will not be evacuated until between 9:45 a.m. and 10:45 a.m. [US News and World Report, 9/14/2001; US Department of State, 8/15/2002] Robert Bonner, who was recently nominated as Commissioner of Customs, will estimate that he was evacuated from the Treasury Department at “about 9:35 a.m.” [9/11 Commission, 1/26/2004; US Department of Homeland Security, 9/20/2004] But other accounts will say the Treasury Department was not evacuated until after the Pentagon attack. [Associated Press, 9/11/2001; Reuters, 9/11/2001; US Department of State, 9/11/2002] Furthermore, journalist and author Robert Draper will describe, even after the State and Treasury Departments have been evacuated, “no agents thought to take charge of the Commerce Department, which housed 5,000 employees.” [Draper, 2007, pp. 143] According to CNN, prior to the Pentagon attack: “[N]either the FAA, NORAD, nor any other federal government organ made any effort to evacuate the buildings in Washington. Officials at the Pentagon said that no mechanism existed within the US government to notify various departments and agencies under such circumstances [as occur today].” [CNN, 9/16/2001]
9.36 a.m. September 11, 2001: Military Cargo Plane Asked to Identify Flight 77
Washington’s Reagan National Airport air traffic control instructs a military C-130 cargo plane that has just departed Andrews Air Force Base to intercept Flight 77 and identify it. [New York Times, 10/16/2001; Guardian, 10/17/2001] Remarkably, this C-130 is the same C-130 that will be 17 miles from Flight 93 when it later crashes into the Pennsylvania countryside (see 10:08 a.m. September 11, 2001). [Pittsburgh Channel, 9/15/2001; Star-Tribune (Minneapolis), 9/11/2002] The pilot, Lt. Col. Steve O’Brien, will claim that he took off around 9:30 a.m., planning to return to Minnesota after dropping supplies off in the Caribbean. He will describe his close encounter: “When air traffic control asked me if we had him [Flight 77] in sight, I told him that was an understatement—by then, he had pretty much filled our windscreen. Then he made a pretty aggressive turn so he was moving right in front of us, a mile and a half, two miles away. I said we had him in sight, then the controller asked me what kind of plane it was. That caught us up, because normally they have all that information. The controller didn’t seem to know anything.” O’Brien reports that the plane is either a 757 or 767 and its silver fuselage means it is probably an American Airlines plane. “They told us to turn and follow that aircraft—in 20 plus years of flying, I’ve never been asked to do something like that.” [Star-Tribune (Minneapolis), 9/11/2002] O’Brien and his crew, Maj. Robert Schumacher and flight engineer Master Sgt. Jeffrey Rosenthal, are unaware of the attacks in New York. Schumacher will say that, after being directed to follow Flight 77, he first thought that the plane was having technical difficulties, “that the pilots were really just trying to fly the airplane, and get it on the ground safely.” After the impact, O’Brien tunes in to a news broadcast, but is surprised to hear about a second crash in New York, not at the Pentagon. He will recall: “The first thing we heard on there was ‘We’re now hearing about a second airplane hitting the World Trade Center.’ That was not what we were expecting to hear. We were expecting to hear about an airplane impacting the Pentagon… and the light goes on, and it’s like, ‘Oh my God, the nation’s under attack!’” [Minnesota Public Radio, 5/31/2004] The 9/11 Commission will report that O’Brien specifically identifies the hijacked plane as a Boeing 757. Seconds after impact, he reports to the Washington tower, “Looks like that aircraft crashed into the Pentagon, sir.” [9/11 Commission, 6/17/2004 ]
Before 9:37 a.m. September 11, 2001: Army Base near Pentagon Holding Air Field Fire Fighting Training
At the Education Center at Fort Myer, an army base 1.5 miles northwest of the Pentagon, the base’s firefighters are undertaking training variously described as “an airport rescue firefighters class”; “an aircraft crash refresher class”; “a week-long class on Air Field Fire Fighting”; and a “training exercise in airport emergency operations.” Despite hearing of the first WTC crash during a break, with no access to a TV, the class simply continues with its training. According to Bruce Surette, who is attending the session: “We had heard some radio transmissions from some other units in Arlington about how they thought they had a plane down here or a plane down there. So you’re thinking, ‘Hey this could be real.’ But it really didn’t strike home as being real until our guy came on the radio and said where the plane crash was.” The Fort Myer firefighters then immediately head for the Pentagon, arriving there at 9:40 a.m., only three minutes after it is hit, and participate in the firefighting and rescue effort there. The fire station at the Pentagon heliport is actually operated by the Fort Myer Fire Department, and is manned on the morning of 9/11 by three Fort Myer firefighters who have already undertaken the airfield firefighting training. [MDW News Service, 10/4/2001; Pentagram, 11/2/2001; Journal of Emergency Medical Services, 4/2002 ; US Department of Health and Human Services, 7/2002 ; First Due News, 4/17/2003] The Fort Myer military community, which includes Fort Myer and Fort Lesley J. McNair—another army base, just two miles east of the Pentagon—was scheduled to hold a “force protection exercise” the week after 9/11. However this has been cancelled, so just prior to the attacks the morning of September 11, “some of its participants [are] breathing a sigh of relief.”
[Pentagram, 9/14/2001]
9:37 a.m. September 11, 2001: Flight 77 Misses Key Pentagon Officials
When Flight 77 hits the Pentagon, it misses the parts of the building known to house the military’s most senior leaders. Journalist and author Steve Vogel later says, “The hijackers had not hit the River or Mall sides” of the building, “where the senior military leadership had been concentrated since 1942.” At the time of the attack, Secretary of Defense Donald Rumsfeld is “sitting in the same third-floor office above the River Entrance as every secretary of defense since Louis Johnson in 1949, a location that had been a matter of public record all that time. The joint chiefs and all the service secretaries were arrayed in various prime E-Ring offices on the River and Mall sides.” Furthermore, “All the command centers save the Navy’s were on the River or Mall sides; the National Military Command Center could have been decimated as the Navy Command Center was, a disaster that could have effectively shut down the Pentagon as the first American war of the twenty-first century began.” Instead, the area hit comprises Army accounting offices, the Navy Command Center, and the Defense Intelligence Agency’s comptroller’s office. [Vogel, 2007, pp. 431 and 449-450] Due to recent renovation work, many offices in that section of the Pentagon are currently empty. [Government Executive, 9/11/2001]
9:37 a.m. September 11, 2001: Fireman Dodges Flight 77; Immediately Notifies Superior about Crashed Jumbo Jet
Fireman Alan Wallace is busy with a safety crew at the Pentagon’s heliport pad. As Wallace is walking in front of the Pentagon, he looks up and sees Flight 77 coming straight at him. It is about 25 feet off the ground, with no landing wheels visible, a few hundred yards away, and closing fast. He runs about 30 feet and dives under a nearby van. [Washington Post, 9/21/2001] The plane is traveling at about 460 mph, and flying so low that it clips the tops of streetlights. [CBS News, 9/21/2001] Using the radio in the van, he calls his fire chief at nearby Fort Myer and says, “We have had a commercial carrier crash into the west side of the Pentagon at the heliport, Washington Boulevard side. The crew is OK. The airplane was a 757 Boeing or a 320 Airbus.” [Scripps Howard News Service, 8/1/2002]
