Senior Airman Camerin Downs, 11th Security Forces Group Combat Arms Training and Maintenance instructor speaks to other CATM intructors through his headset during heavy weapons qualification Mar. 4, 2013, at Marine Corps Base Quantico firing range, Quantico, Va. CATM instuctors train all Airmen on how to fire and maintain small arms weapons.(U.S. Air Force photo by Staff Sgt. Perry Aston)