Conventional maintenance crewmembers assigned to the 28th Munitions Squadron assemble and load inert GBU-31V bombs during an Operational Readiness Exercise on Ellsworth Air Force Base, S.D., Feb. 22, 2012. 28th MUNS Airmen provide conventional munitions, armament systems and trained munitions personnel. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)