180123-M-WQ703-0013 CAMP PENDLETON, Calif. (Jan. 23, 2018) Japan Ground Self-Defense Force soldiers assigned to the Western Army Infantry Regiment fast rope out of the back out of the back on an MV-22 Osprey during exercise Iron Fist 2018. Iron Fist is an annual, bilateral training exercise where U.S. and Japanese service members train together and share techniques, tactics and procedures to improve their combined operational capabilities. (U.S. Marine Corps photo by GySgt. Robert B. Brown Jr./Released)