Marines from Marine Heavy Helicopter Squadron 463, 1st Marine Aircraft Wing, from Marine Corps Air Station Kaneohe Bay, Hawaii, work on a CH-53E Super Sea Stallion on the flight deck of amphibious assault ship USS Peleliu while underway for Rim of the Pacific Exercise 2014. Twenty-two nations, 49 ships and six submarines, more than 200 aircraft and 25,000 personnel are participating in RIMPAC exercise from June 26 to Aug. 1, in and around the Hawaiian Islands and Southern California. The world's largest international maritime exercise, RIMPAC provides a unique training opportunity that helps participants foster and sustain the cooperative relationships that are critical to ensuring the safety of sea lanes and security on the world's oceans. RIMPAC 2014 is the 24th exercise in the series that began in 1971.