Senior Airman Tyler Galvan, 28th Munitions Squadron conventional maintenance crew member, assembles inert guided bomb units during the Phase II portion of an operational readiness exercise at Ellsworth Air Force Base, S.D., July 10, 2013. The 28th MUNS’ goal during the ORE was to evaluate the effectiveness, maintainability, suitability and accuracy of precision guided munitions and other advanced air to ground weapons. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)