Staff Sgt. Mitchell Harkley (foreground), 28th Medical Operations Squadron aerospace medical technician, and Airman 1st Class Roger Pedraza, 28th MDOS bioenvironmental engineering apprentice, build pallets in the Pride Hangar during an operational readiness exercise on Ellsworth Air Force Base, S.D., Sept. 14, 2011. The purpose of the exercise was to ensure Airmen are trained, prepared and ready to deploy with short notice. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)