U.S. track athlete Daniel Castle, right, competes in the men's 1,500-meter competition during the 6th Conseil International du Sport Militaire’s (CISM) Military World Games in Mungyeong, South Korea, Oct. 6, 2015. The CISM World Games provide the opportunity for the athletes from more than 100 nations to come together and enjoy friendship through sports. U.S. Marine Corps photo by Cpl. Jordan E. Gilbert