940 Security Forces Squadron holds field training exercise
A 940th Wing Combat Arms Training and Maintenance instructor evaluates the performance of a fellow Reservist firing an M203 grenade launcher. The training at the firing range on Beale Air Force Base, Calif., was part of the Reserve unit's first annual field training exercise, Spartan Shield, held July 6-8, 2012. (U.S. Air Force photo/Senior Airman Adam Hamar)