A security officer for one of the businesses in Building 7 of the World Trade Center (WTC 7) goes up WTC 7 and subsequently becomes trapped on its seventh floor. [National Institute of Standards and Technology, 9/2005, pp. 109-110; National Institute of Standards and Technology, 11/2008, pp. 298-299] Although most people were evacuated from the building around the time the South Tower was hit, if not earlier (see (9:03 a.m.) September 11, 2001), after the South Tower collapses at 9:59 a.m. the security officer heads up to a floor in the 40s in WTC 7, reportedly to check that all his personnel have left. (The name of the company he works for is unstated.) He is initially accompanied by a police officer, but at around the 10th floor this officer has difficulty breathing, and so goes back down and exits the building. When the North Tower collapses at 10:28 a.m., WTC 7 shakes and the stairwell goes dark. The security officer, who has reached the 30th floor by this time, heads back down the stairs. When he reaches the 23rd floor, where the headquarters of New York’s Office of Emergency Management (OEM) is located, he opens the door to check for any members of staff that might still be there, but finds the area filled with smoke. (The OEM was evacuated at about 9:30 a.m., if not earlier (see (Soon After 8:46 a.m.-9:35 a.m.) September 11, 2001 and (9:30 a.m.) September 11, 2001).) He then continues down to the seventh floor, where he has to stop because he is unable to see or breathe. He is able to break a window, and calls for help. [National Institute of Standards and Technology, 11/2008, pp. 298-299] At around 12:10 to 12:15 p.m., firefighters will enter the building and rescue the security officer, escorting him down the stairs and out of the building. They will also rescue two men who are trapped on the eighth floor (see 12:10 p.m.-12:15 p.m. September 11, 2001). [National Institute of Standards and Technology, 6/2004; National Institute of Standards and Technology, 9/2005, pp. 110]


