Weapons load crew Airmen prepare six GBU-54 laser Joint Direct Attack Munitions for loading onto three B-1 Lancer on May 12, 2012, during a Combat Hammer exercise at Ellsworth Air Force Base, S.D. The goal of the exercise was to evaluate the effectiveness, maintainability, suitability and accuracy of precision-guided munitions and other advanced air-to-ground weapons. The Airmen are assigned to the 28th Aircraft Maintenance Squadron at Ellsworth AFB. (U.S. Air Force photo/Airman 1st Class Zachary Hada)