Thousands of competitors gather to participate in the

Thousands of competitors gather to participate in the 19th annual "Swamp Romp," Feb. 16, 2013, at Marine Corps Base Hawaii, in Kaneohe Bay, Kailua, Hawaii. The Swamp Romp is an annual team running event that is one of 11 races that make up the Marine Corps Base Hawaii, Commanding Officer's fitness series. The race is also known as the dirtiest race of the year is open to the public and brings service members and civilians from the community into six-person-teams for a challenging five-mile run over and under obstacles through mud and dirt, of the Nu'upia ponds and down Fort Hase beach. (Department of Defense photo by U.S. Air Force Tech. Sgt. Michael R. Holzworth/Released)