U.S. Air Force Tech. Sgt. Tyler Harrill, far right, 7th Munitions Squadron 7-level inspector, conducts a final inspection on a bomb-stacking exercise during the 2015 Global Strike Challenge Aug. 17, 2015, at Dyess Air Force Base, Texas. GSC assesses mission proficiency in a behind-the-scenes look at part of the operations of maintenance and munitions crews. (U.S. Air Force photo by Senior Airman Kedesha Pennant/Released)