The U.S. Navy commissioned its newest guided-missile destroyer Saturday at Naval Station Norfolk, the first American warship named for a service member who earned the Medal of Honor in Vietnam. USS Harvey C. Barnum Jr ., hull number DDG 124, entered active service in a ceremony attended by roughly 1,800 guests, according to a release from Commander, Naval Surface Force Atlantic. Retired Col. Harvey C. "Barney" Barnum Jr., 85, sat in the crowd. His wife, Martha Hill, serves as the ship's sponsor