Airman 1st Class Melody Jenkins, 2nd Munitions Squadron conventional maintenance crew chief, secures a Joint Direct Attack Munition Guided Bomb Unit version 3 during the Weapons Standards Evaluation Program 12-21 exercise Combat Hammer on Barksdale Air Force Base, La., Aug. 9. The evaluation is designed to detect any faults the munitions may have when it is deployed; such as why it did or didn't hit its intended target. (U.S. Air Force photo/Senior Airman Sean Martin)(RELEASED)