Secret Service Agents evacuate U.S. Vice President Dick Cheney and his aides from his office in the White House to the Presidential Emergency Management Operations Center, a Cold War-era bunker beneath the White House.1

1 "Vice President Cheney Evacuated" National September 11 Memorial & Museum n.d. Web. March 17, 2011 http://timeline.national911memorial.org/#/Explore
Courtesy of the National 9/11 Memorial and Museum