Staff Sgt. Jonathan Davis Jr., a metals technician with Air Force Reserve Command's 940th Maintenance Group, practices sighting an M-16 with a gas mask on. He and other unit members from the 940th Air Refueling Wing recieved classroom instruction for M-16 weapons qualification during a unit training assembly weekend at Beale Air Force Base, Calif. in preparation for an operational readiness inspection in February 2008. (U.S. Air Force photo/Staff Sgt. Luke Johnson)