Soldiers with Western Army, Japan Ground Self-Defense Force, await their debarkation of a landing craft air cushion onto San Clemente Island, California, Feb. 21, 2016, as part of the supported arms coordination center exercise portion of Exercise Iron Fist 2016. Iron Fist is an annual, bilateral amphibious training exercise designed to improve USMC and JGSDF’s ability to plan, communicate and conduct combined amphibious operations at the platoon, company and battalion levels. - Soldiers with Western Army, Japan Ground Self-Defense Force, await their debarkation of a landing craft air cushion onto San Clemente Island, California, Feb. 21, 2016, as part of the supported arms coordination center exercise portion of Exercise Iron Fist 2016. Iron Fist is an annual, bilateral amphibious training exercise designed to improve USMC and JGSDF’s ability to plan, communicate and conduct combined amphibious operations at the platoon, company and battalion levels.