People are helped away from the World Trade Center tower in New York City September 11, 2001. Both towers were hit by planes crashing into the building. REUTERS/Shannon Stapleton (Reuters)
People walk away from the World Trade Center tower in New York City early September 11, 2001. Both towers were hit by planes crashing into the building. Victims from the attack on the World Trade Center -- many suffering from extensive burns -- began arriving at hospitals in New York City about an hour after two planes slammed into the twin towers, witnesses said Tuesday. REUTERS/Shannon Stapleton (Reuters)
People walk away from the World Trade Center towers in New York City, September 11, 2001. Both towers were hit by airplanes which crashed into the buildings, both towers collapsed a short time later. REUTERS/Shannon Stapleton (Reuters)
People walk away from the World Trade Center tower in New York City early September 11, 2001. Both towers were hit by planes crashing into the building. Three hijacked planes crashed into U.S. landmarks on Tuesday, destroying both of New York's mighty twin towers and plunging the Pentagon in Washington into flames in an unprecedented assault on key symbols of U.S. military and financial power REUTERS/Shannon Stapleton (Reuters)
A rescue helicopter surveys damage to the Pentagon as firefighters battle flames after an airplane crashed into the U.S. military Headquarters outside of Washington in an apparent terrorist attack, September 11, 2001. REUTERS/Larry Downing (Reuters)
U.S. Marines watch as a rescue helicopter surveys damage to the Pentagon Building as fire fighters battle flames after an apparent terrorist airplane crashed into the U.S. military Headquarters outside of Washington, September 11, 2001. REUTERS/Larry Downing (Reuters)