Participants in the M4 rifle qualification course load ammunition into their respective cartridges at the 99th Security Forces Squadron Combat Arms Training and Maintenance firing range on Nellis Air Force Base, Nev., Aug. 18, 2015. Airmen participated in the qualification course in preparation for either a deployment, permanent change of station move, or part of yearly training. (U.S. Air Force photo by Airman 1st Class Jake Carter)