Tech. Sgt. Ron Davis, left, a medical readiness instructor from the 381st Training Squadron at Sheppard Air Force Base, Texas, and Master Sgt. Ernest Farmer, a mental health technician from the 94th Aeromedical Staging Squadron at Dobbins Air Reserve Base, Ga., work together to fit an air filter onto the duct of an environmental control unit for a medical tent during exercise Golden Medic on June 11, 2007. The Army Reserve sponsors the yearly medical exercise to provide realistic training for combat support and service support units. The exercise is designed to enhance the overall training and readiness of Army and Air Force medical units. (U.S. Air Force photo/Senior Airman Erica J. Knight)