Gary Lawton, a submarine captain with the Australian navy, participates in a bike race during the annual Koa Kai Sprint Triathlon at Marine Corps Air Station Kaneohe Bay, Hawaii, May 4, 2014.
Marine Corps Community Services hosted the race, in which civilians and service members from around the island of Oahu participated in the multi-staged competition. (DoD photo illustration by Lance Cpl. Aaron S. Patterson, U.S. Marine Corps/Released). Original public domain image from Flickr