LANGLEY AIR FORCE BASE, Va. -- Chief Master Sgt. Martin Klukas (carrying flag), Air Combat Command command chief, leads the first group of runners along the Langley Air Force Base, Va. running trail during the POW/MIA 24-hour Flag Run, Sept. 16. More than 350 runners participated in the event, which culminated at the base POW/MIA Memorial in a ceremony on the federally-recognized POW/MIA Recognition Day, Sept. 17. (U.S. Air Force photo/Airman 1st Class Jason J. Brown) (RELEASED)