Gen. Joseph F. Dunford Jr., 36th commandant of the Marine Corps, hosts a question and answer session with Marines and sailors stationed aboard Marine Corps Base Hawaii during a visit March 18, 2015. Sgt. Maj. Ronald L. Green, the 18th sergeant major of the Marine Corps, accompanied him. (U.S. Marine Corps photo by Lance Cpl. Brittney Vella/Released) - Gen. Joseph F. Dunford Jr., 36th commandant of the Marine Corps, hosts a question and answer session with Marines and sailors stationed aboard Marine Corps Base Hawaii during a visit March 18, 2015. Sgt. Maj. Ronald L. Green, the 18th sergeant major of the Marine Corps, accompanied him. (U.S. Marine Corps photo by Lance Cpl. Brittney Vella/Released)