Vietnam and Korean War veterans and their families listen to a speech at the Memorial Day retreat ceremony at Ellsworth Air Force Base, S.D., May 21, 2015. Ellsworth hosted a Memorial Day event, inviting local World War II, Vietnam and Korean War veterans and their family members to tour the base, view a B-1 bomber and munitions display, and attend a retreat ceremony at the 28th Bomb Wing headquarters building. (U.S. Air Force photo by Senior Airman Hailey R. Staker/Released)