Iron First Marines hold a support-by-fire position in an amphibious combat vehicle during exercise Iron Fist, a joint amphibious exercise with Japan, at Marine Corps Base Camp Pendleton, Calif., Jan. 14, 2022. SHARE: Download: Full Size (1.34 MB) Tags: exercises, marine corps, iron first Credit: Marine Corps Cpl. Sydney Smith VIRIN: 220114-M-WC972-1014M.JPG Photo Gallery