Personnel from New York’s Office of Emergency Management (OEM) use the OEM command bus as their command post after their command center in World Trade Center Building 7 has been evacuated. [Jenkins and Edwards-Winslow, 9/2003, pp. 20 ; 9/11 Commission, 4/7/2004] The OEM command center, on the 23rd floor of WTC 7, is intended to coordinate the city’s response to emergencies, including terrorist attacks. [New York Times, 6/8/1999] However, it was evacuated at around 9:30 a.m., according to the 9/11 Commission Report, although other accounts will suggest the evacuation occurs at an earlier or later time (see (Soon After 8:46 a.m.-9:35 a.m.) September 11, 2001, (Shortly Before 9:03 a.m.) September 11, 2001, and (9:30 a.m.) September 11, 2001). [9/11 Commission, 7/24/2004, pp. 305; National Institute of Standards and Technology, 9/2005, pp. 109; Barrett and Collins, 2006, pp. 34] OEM personnel therefore now have to operate from the their command bus. [Jenkins and Edwards-Winslow, 9/2003, pp. 20
; 9/11 Commission, 4/7/2004] The bus, known as the Interagency Command Center (ICC), is equipped with computers, a state-of-the-art communications system, and on-board electrical generation. It also has its own conference room. [Wall Street Journal, 9/21/2001; Jenkins and Edwards-Winslow, 9/2003, pp. 20
; Power, 2004, pp. 172] It can be deployed to the location of a major emergency, to serve as an on-scene command post for coordinating interagency operations and communications. [City of New York, 2001, pp. 8
] The OEM’s emergency plans and vital records are kept in WTC 7, and, due to the evacuation of the command center, are now inaccessible. Fortunately, after they move to the ICC, OEM personnel are able to implement their emergency action plans from memory and by utilizing their combined knowledge. [Jenkins and Edwards-Winslow, 9/2003, pp. 20
] After the Twin Towers collapse, the ICC will move to a firehouse on Houston Street, to provide support to Mayor Rudolph Giuliani and his entourage, who have set up a temporary headquarters at that location (see (After 10:28 a.m.-12:00 pm.) September 11, 2001). [Wall Street Journal, 9/21/2001; 9/11 Commission, 4/7/2004]