Remembering History: Evacuating Wounded: A rescue helicopter uses Washington Boulevard outside the Pentagon to evacuate injured personnel after the terrorist attack on the building on September 11, 2001.

Evacuating Wounded: A rescue helicopter uses Washington Boulevard outside the Pentagon to evacuate injured personnel after the terrorist attack on the building on September 11, 2001.

Evacuating Wounded: A rescue helicopter uses Washington Boulevard outside the Pentagon to evacuate injured personnel after the terrorist attack on the building on September 11, 2001.