Munitions (AMMO)
U.S Air Force Airman 1st Class Zackary Crabb, 355th Equipment Maintenance Squadron, and Airman 1st Class Jordan Shepherd, 355th Equipment Maintenance Squadron, feeds 30mm of ammo onto the GFU-7 rail system on Davis-Monthan Air Force Base, Ariz., Feb. 8, 2012. (U.S. Air Force photo by Airman 1st Class Christine Griffiths/Released)