U.S. Army Staff Sgt. Thomas George, assigend to Headquarters and Headquarters Company, 44th Expeditionary Signal Battalion, 2nd Theater Signal Brigade, relays commands using traditional Signal Corps red and white semaphore flags during a rehearsal for the battalion change of command ceremony May 24, 2018 at Tower Barracks in Grafenwoehr, Germany. (U.S. Army photo by William B. King)