From left, U.S. Army Brig. Gen. Thomas A. Harvey, Lt. Gen. John D. Johnson, and Brig. Gen. Paul C. Hurley Jr., salute during the 19th Expeditionary Sustainment Command (ESC) change of command at Kelly Field on Camp Walker, Republic of Korea, June 30, 2011. Harvey is the 19th ESC outgoing commander, Johnson is the 8th Army commander, and Harvey is the 19th ESC incoming commander.