Pentagon

ARLINGTON, VA – SEPTEMBER 11: Commercial air traffic coming and going from Reagan National Airport flies overhead during the observance of the fifth anniversary of the Sepember 11, 2001 attack on the Pentagon at the Pentagon September 11, 2006 in Arlington, Virginia. Friends and family members of those who perished in the attack were invited to the ceremony on the Pentagon’s Mall Terrace. (Photo by Chip Somodevilla/Getty Images)