U.S. Marines and Japanese soldiers clear an obstacle during a breaching exercise that's part of Exercise Iron Fist on Marine Corps Base Camp Pendleton, Calif., Feb. 4, 2016. The Marines, assigned to 1st Combat Logistics Battalion, 11th Marine Expeditionary Unit, are participating in Iron Fist, an annual, bilateral training exercise conducted with Japanese soldiers to refine combined amphibious operational capabilities. The detonation charge contains 1,750 pounds of C4 explosive and is launched into a forward area by a rocket to clear a path. Marine Corps photo by Cpl. Garrett White