Extras
On the 15th anniversary of the attack, survivors tell their stories.
Flight 77 hits the Pentagon. Survivors inside begin the fight for their lives.
Some people inside the Pentagon know an attack is underway.
Rarely told stories of the attack on the headquarters of the U.S. Department of Defense.
What happened behind the walls of the Pentagon is a largely untold chapter in history.
In response to reports of a second incoming plane, rescuers race to evacuate.
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On the 15th anniversary of the attack, survivors tell their stories.