Airman Sidney Van Doorn, 28th Aircraft Maintenance Squadron weapons load crew journeyman, transports an inert GBU-34 bomb to a B-1 bomber during the Global Strike Challenge at Ellsworth Air Force Base, S.D., Sept. 26, 2014. The Global Strike Challenge is designed to improve combat capabilities through preparation, innovation, competition and teamwork. (U.S. Air Force photo by Senior Airman Zachary Hada/Released)