Senior Airman Nathan Warren, 28th Security Forces Squadron combat arms instructor, teaches a Combat Arms Training and Maintenance class for Airman on Ellsworth Air Force Base, S.D., Jan. 9, 2012. The class teaches Airmen how to properly handle weapons including disassembly, reassembly, safety, clearing, loading, reloading, and jams. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)