Airman honor our nations prisoners of war and missing in action by in a 24-hour Run/Walk Vigil at Langley Air Force Base, Va., Sept. 16, 2011. The POW/MIA flag was transported by various volunteers around the base through the night, arriving at the memeorial to begin the official POW/MIA ceremony. (U.S. Air Force photo by Staff. Sgt. Antoinette Gibson/Released)