In honor of the third annual POW-MIA Remembrance Vigil run at Langley Air Force Base, Va., Airmen from survival, evasion, resistance and escape “ruck-march,” Sept. 20, 2012. Observances of National POW-MIA Recognition Day are held across the country on military installations, ships at sea, state capitols, schools and veterans facilities. (U.S. Air Force photo by Airman 1st Class Kayla Newman/Released)