Aircrew from the 37th Bomb Squadron “Tigers” step to the flightline prior to taking off for a Combat Hammer exercise at Ellsworth Air Force Base, S.D., May 14, 2012. Aircrews from both the 34th BS and 37 BS thundered into the Utah Test and Training Range to employ six GBU-54 Laser Joint Direct Attack Munitions as a part of a weapon systems evaluation program to measure the effectiveness of both the munitions and the aircrews. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)