Runners deployed to support Operation Inherent Resolve start the Air Force Marathon half and 10K races at an undisclosed location in Southwest Asia, Sept. 19, 2015.
The Air Force Marathon is held the third Saturday in September each year, 2015 marks the 19th year the race has been officially held. (U.S. Air Force photo/Tech Sgt. Brittany E. Jones). Original public domain image from Flickr