Mark IV tank stuck in the mud
The RAH-66 mid-flight
Colditz Castle
Members of the 82nd Airborne Division watch as a test firing of C4 explosives explodes near the Orgun-e forward base in Afghanistan. The explosion was part of training exercises to teach U.S. troops how to build field explosives out of explosive C4 and detonation cords.
Members of the US Air Force's Misty unit standing together
US aircraft dropping incendiary bombs
US soldier aiming an M4 Carbine
A drawing of Marie Marvingt's air ambulance
US Navy sailor firing an M16 rifle
Hagia Sophia at sunset
Overhead view of the contents of the Memorial Amphitheater time capsule