Preparations are underway at the Pentagon heliport, located about 150 feet from the west side of the building, for the expected arrival of President Bush at around midday. Bush had left from the Pentagon the previous day for his visit to Florida. He occasionally uses the Pentagon heliport rather than the White House grounds when going by helicopter to and from Air Force One at Andrews Air Force Base. [Goldberg et al., 2007, pp. 64] The White House grounds are unavailable because the annual Congressional picnic is scheduled to take place there this afternoon. The White House hosts this event for members of Congress and select staffers; around 1,200 guests are due to attend, until the attacks lead to it being canceled. [Scripps Howard News Service, 9/11/2001; Scheib and Friedman, 2007, pp. 254-255; Hayes, 2007, pp. 344] Three firefighters from the fire department at nearby Fort Myer had arrived at the Pentagon at around 7:30 a.m. to man the fire station next to the heliport. [Newsweek, 9/28/2001; Journal of Emergency Medical Services, 4/2002, pp. 22 ; Goldberg et al., 2007, pp. 65] “Every day they have an aircraft flying, we’re there,” firefighter Alan Wallace will later explain. [Pentagram, 9/14/2001] Wallace decides to pull the fire truck out of the fire station and place it in a position more accessible to the heliport landing pad. [First Due News, 4/17/2003] The truck is equipped with the special chemical foam used in fighting jet fuel fires. [Goldberg et al., 2007, pp. 65] Wallace parks it about 15 feet from the Pentagon’s west wall, facing toward the landing pad. Wallace will recall that with many vehicles—belonging to the Secret Service and other agencies—expected to be around for the president’s arrival, he “wanted the crash truck out of the station and parked in a good location, for easy access to the heliport in case of an emergency.” [First Due News, 4/17/2003] When the Pentagon is hit at 9:37 a.m., the aircraft will crash into an area of the building next to the heliport (see 9:37 a.m. September 11, 2001). [USA Today, 9/12/2001; American Forces Press Service, 9/7/2006]