Col. James Katrenak, 28th Maintenance Group commander (left), presents the guidon for the 28th Maintenance Squadron to the new 28th MXS commander, Maj. Larry Rochat, during a ceremony on Ellsworth Air Force Base, S.D, June 3, 2013. Rochat was commander of the 28th Maintenance Operations Squadron, which was inactivated prior to the change of command. The personnel and assets are being realigned to optimize maintenance operations under the 28th MXG umbrella. (U.S. Air Force photo by Senior Airman Kate Maurer/Released)