A Danish military hospital corpsman serves as a medical support official during a satellite 10-kilometer race at Camp Leatherneck in Helmand province, Afghanistan, held as part of the Atlanta Journal-Constitution Peachtree Road Race July 4, 2013.
The Atlanta-based event, the world's largest 10-kilometer race, is held every Independence Day. (DoD photo by Cpl. Alejandro Pena, U.S. Marine Corps/Released). Original public domain image from Flickr