U.S. Army paratroopers sit in a C-17 Globemaster III aircraft during a joint operational access exercise.
U.S. Army paratroopers sit in a C-17 Globemaster III aircraft during a joint operational access exercise at Fort Bragg, N.C., on June 21, 2011. A joint operational access exercise is a joint airdrop exercise designed to enhance service cohesiveness between Army and Air Force personnel, allowing both services an opportunity to execute large-scale heavy equipment and troop movement.