Multimedia for September 11 attacks: Pentagon Memorial. Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and Web sites.
3000 flags line the Pentagon Healing Field where each flag represents a victim of the September 11 attacks, at the September 11 Pentagon Memorial Thursday, Sept. 2008 at the Pentagon in Washington. (AP Photo/Evan Vucci) We Will Never Forget
FILE PHOTO -- Soldiers assigned to the 3d U.S. Infantry Regiment (The Old Guard) participate in a group run to the 9/11 memorial at the Pentagon in Arlington, Va., Sept. 19, 2017. (Photo Credit: Pvt. Lane Hiser)