Departing 315th Maintenance Group Commander, Col. Richard Gay. congratulates new 315th MXG Commander, Col. Sharon Johnson during a change of command ceremony Nov. 6. Members of the 315th Maintenance Group welcomed the new commander to their unit during a change of command ceremony at Joint Base Charleston, South Carolina. Gay relinquished his command of seven years to Johnson as Gay prepares for his retirement later in the year. (U.S. Air Force Photo by Senior Airman Jonathan Lane)