Smoke billows from one of the towers of the World Trade Center and flames and debris explode from the second tower, Tuesday, Sept. 11, 2001. In one of the most horrifying attacks ever against the United States, terrorists crashed two airliners into the World Trade Center in a deadly series of blows that brought down the twin 110-story towers. (AP Photo/Chao Soi Cheong)
Gallery: The Sept. 11, 2001, terrorist attacks
Sep. 10, 2011 @ 04:26 PM
On Tuesday, Sept. 11, terrorists hijacked airplanes and used them to destroy the Twin Towers in New York City and damage the Pentagon in Washington, D.C. One of the planes crashed in a field in rural Pennsylvania.
Excluding the 19 hijackers, the death toll stands at 2,998 with 24 more presumed dead,