Inert guided bomb units are ready to be loaded into a mock B-1 bomber simulator by weapons load crew Airmen during training at Ellsworth Air Force Base, S.D., Aug. 13, 2013. Weapons load crew Airmen enable each B-1 bomber to deliver a payload of up to 75,000 pounds to mission targets. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)