Members of the Japan Ground Self-Defense Force march through Range 400 during Exercise Iron Fist 2015 aboard Marine Corps Air Ground Combat Center Twentynine Palms, Calif., Feb. 10, 2015. Exercise Iron Fist 2015 is the 10th anniversary of a bilateral training exercise between the U.S. Marine Corps and the Japan Ground Self-Defense Force, meant to strengthen interoperability between the two militaries. (U.S. Marine Corps photo by Cpl. David Gonzalez, 13th Marine Expeditionary Combat Camera/ Released)