Senior Airman Calvin Johnson, 455th Expeditionary Security Forces Squadron, sings the national anthem during a change of command ceremony at Bagram Airfield, Afghanistan, June 3, 2017. During the ceremony, Brig. Gen. Jim Sears relinquished command of the 455th Air Expeditionary Wing to Brig. Gen. Craig Baker. (U.S. Air Force photo by Staff Sgt. Benjamin Gonsier)