U.S. Air Force Master Sgt. Jeffrey Koenig, Air Force Sergeants Association Chapter 358 president, helps members of the Langley Air Force Base Honor Guard raise the POW/MIA flag over the POW/MIA Memorial at Langley Air Force Base, Va., Sept. 20, 2013. Volunteer runners kept the flag in constant motion for during a 24-hour run in honor of POW/MIA Service members. (U.S. Air Force photo by Airman Areca T. Wilson/Released)