Marine Corps Gen. Joe. Dunford, left, chairman of the Joint Chiefs of Staff, speaks with retired Marine Corps Sgt. Maj. Harold G. Overstreet, a former sergeant major of the Marine Corps, before a naming ceremony for the USS Harvey C. Barnum Jr. at Marine Barracks Washington, D.C., July 28, 2016. Barnum, a Vietnam War veteran and Medal of Honor recipient, also attended the ceremony to name the ship, which will be an Arleigh Burke-class guided-missile destroyer. DoD photo by Army Sgt. James K. McCann