Secretary of the Navy Ray Mabus and Retired Marine Col. Harvey C. Barnum, Jr. arrive at the parade field for the official renaming of Arleigh Burke-class destroyer, DDG-124, to the USS Harvey C. Barnum, Jr. at Marine Barracks Washington, July 28, 2016. Col. Barnum received the Medal of Honor during Operation Harvest Moon in the Vietnam War. With a length of 505 ft., and weaponry including over 90 missiles, Arleigh Burke-class destroyers are among the largest and most heavily armed destroyers in the United States arsenal. (U.S. Marine Corps Photo by Cpl. Remington Hall/Released)