160728-M-EI943-003 WASHINGTON (July 28, 2016) A Marine holds a poster of the future Arleigh Burke-class guided-missile destroyer USS Harvey C. Barnum, Jr. (DDG-124) during a ceremony July 28, 2016 at the Marine Barracks in Washington, D.C. . This is the sixth ship Mabus has named honoring a Medal of Honor recipient. U.S. Marine Corps Col. Harvey C. Barnum Jr. was awarded the Medal of Honor for valor during the Vietnam War. (U.S. Marine Corps Photo by Cpl. Remington Hall/Released)