Gunner U.S. Petty Officer 3rd Class Derek Dick fires an M2 .50 caliber machine gun while assistant gunner Staff Sgt. Joshua Hopkins feeds the ammunition during heavy weapons firing on Fort Bliss' Range 39 July 26, 2017. Heavy weapons firing is just one part of the Air Force Security Forces Center Desert Defender Ground Combat Readiness Training Center's basic security course. The course is typically taken just prior to a security forces member's deployment to a forward location. (U.S. Air Force photo by Debbie Aragon)