LANGLEY AIR FORCE BASE, Va. -- Participants gather around after completing an eight mile duathlon sponsored by the 1st Force Support Squadron Aug. 15. The duathlon is designed to challenge each participant's physical endurance with cycling and running. The 1st FSS organizes an event monthly to continue encouraging physical fitness as the Air Force exercises the fit to fight mentality. (U.S. Air Force photo/Senior Airman Vernon Young)