U.S. Army Sgt. Katilina Caballero, a drop zone safety team member assigned to 1st Battalion, Special Troops Battalion, checks wind speed prior to a heavy drop airlift mission during Joint Operations Access Exercise at Fort Bragg in Fayetteville, N.C., on June 23, 2011. A joint operations access exercise is a two-week exercise to prepare Air Force and Army service members to respond to worldwide crisis and contingencies.