Senior Airman James Randolph and Staff Sgt. Marlow Dotts pull their safety belts tight as they prepare to roll over in the Mine Resistant Ambush Protected vehicle roll-over egress trainer. Airman Randolph, assigned to the 28th Contracting Squadron, Ellsworth Air Force Base, S.D., and Sergeant Dotts, 87th Contracting Squadron, McGuire Air Force Base, N.J., joined other contracting Airmen who participated in Operation Joint Dawn 2011, a U.S. Army Expeditionary Contracting Command pre-deployment exercise. (U.S. Army photo/Ed Worley)