Maj. Larry Rochat (right) accepts command of the 28th Maintenance Operations Squadron from Col. James Katrenak, 28th Maintenance Group commander, during a ceremony in the Pride Hangar at Ellsworth Air Force Base, S.D., June 22, 2012. The 28th MOS ensures the capability of B-1 bombers assigned to the 28th Bomb Wing and the efficient utilization of all wing maintenance assets. (U.S. Air Force photo by Airman 1st Class Zachary Hada, Released)