Conventional Maintenance crew members assigned to the 28th Munitions Squadron assemble inert guided bomb units during an Operational Readiness Exercise at Ellsworth Air Force Base, S.D., March 19, 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)