Surviving family members of a victim who died in the Sept. 11, 2001 terrorist attack against the Pentagon, attend a memorial observance at the Pentagon Memorial site, Sept. 11, 2007, in honor of the 184 people who perished when American Airlines Flight 77 crashed into the Pentagon. Surviving family members of a victim who died in the Sept. 11, 2001 terrorist attack against the Pentagon, attend a memorial observance at the Pentagon Memorial site, Sept. 11, 2007, in honor of the 184 people who perished when American Airlines Flight 77 crashed into the Pentagon. SHARE: Download: Full Size (1.57 MB) Tags: Photo Essays Credit: VIRIN: 385794-S-HGD54-970.jpg Photo Gallery