Vietnam Veteran U.S. Air Force Col. (retired) Douglas Webster, left, speaks at the Joint Base Langley-Eustis Vietnam Commemoration opening ceremony at Fort Eustis, Va., May 16, 2015. Webster was a C-130 navigator who survived an engine malfunctioning while in flight during the Vietnam conflict. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)