315th Airlift Wing Commander, Col. Gregory Gilmour passes the guidon to new 315th Maintenance Group Commander, Col. Sharon Johnson 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. Col. Richard 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)