California Guard participates in firing mission
Staff Sgt. Andrew Gibson checks the ammo belt for a .50-caliber machine gun on board an HH-60G Pave Hawk during a firing mission June 25, 2010, on the Nevada Test and Training Range. Sergeant Gibson is a flight engineer assigned to the California Air National Guard's 129th Rescue Squadron at Moffett Field, Calif. (U.S. Air Force photo/Master Sgt. Kevin Gruenwald)