Evacuations begin at the White House and Capitol Building. Throughout the morning, officials evacuate high-profile buildings, government offices, landmarks and public spaces, in response to rumors of escalating attacks. 1

1 "Evacuation of White House and Capitol" 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