AMMO
Airmen of the 332nd Expeditionary Maintenance Squadron Munitions Flight tighten screws and bolts on a Guided Bomb Unit-54 laser joint direct attack munition Oct. 14, 2010, Joint Base Balad, Iraq. The GBU-54 is the Air Force's newest 500-pound precision weapon, equipped with a special targeting system that uses a combination of Global Positioning System and laser guidance to accurately engage and destroy moving targets. (U.S. Air Force photo/Tech. Sgt. Phillip Butterfield)