ELLSWORTH AIR FORCE BASE, S.D. – Tech. Sgt. Kevin David, 28th Medical Group NCO in-charge of resource management, uses a radio during a phase II Operational Readiness Exercise, May 11. The Phase II ORE will test Airmen across the base on their ability to operate in a deployed environment. (U.S. Air Force photo/Airman 1st Class Anthony Sanchelli)