Americanos começam a encher as ruas de Washington, D.C., na manhã desta segunda-feira (21) para acompanhar a cerimônia de posse do presidente reeleito Barack Obama (Foto: AP Photo/Pablo Martinez Monsivais)
The United States was attacked when terrorists crashed commercial airliners into the twin towers of the World Trade Center, the Pentagon and in a field in Shanksville, Pa., on Sept. 11, 2001. The mangled antenna from the North Tower of the World Trade Center is displayed in the Newseum’s 9/11 Gallery; Washington, DC.
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. 11, 2008 at the Pentagon in Washington. (AP Photo/Evan Vucci)