Vietnam Veteran U.S. Army Chief Warrant Officer 3 (retired) John Gragg attends the Joint Base Langley-Eustis Vietnam Commemoration at Fort Eustis, Va., May 16, 2015. Gragg served two tours in Vietnam and attended the ceremony in hopes of finding fellow U.S. Service members who were stationed with him. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)