A U.S. Marine, right, with the 1st Battalion, 1st Marine Regiment, trades coins with a Japan Ground Self-Defense Force soldier at Marine Corps Base Camp Pendleton, Calif., Feb. 9, 2014, during exercise Iron Fist 2014. Iron Fist is a three-week bilateral training event held annually between the U.S. Marine Corps and the Japan Ground Self-Defense Force designed to increase interoperability between the two services while aiding the Japanese in their continued development of amphibious capabilities.