Sergeant Major of the Marine Corps, Sgt. Maj. Michael P. Barrett, right, reads a promotion warrant next to Commandant of the U.S. Marine Corps, Gen. James F. Amos, center, at Washington Barracks, D.C., Aug. 29, 2014. Amos and Barrett promoted Chesty, the Marine Corps mascot, to the rank of corporal. (U.S. Marine Corps photo by Sgt. Gabriela Garcia)