A Japanese MCH-101 airborne mine countermeasures helicopter lands on a heliport designated by Marine Air Control Squadron 4 Detachment B during a cross-training exercise at Marine Corps Air Station Iwakuni, Japan, March 30, 2017. The purpose of the exercise was to simulate a forward arming and refueling points operation, where Marines communicated with Japan Maritime Self-Defense Force helicopter pilots to perform austere landings on a heliport that acted as an expeditionary runway. - A Japanese MCH-101 airborne mine countermeasures helicopter lands on a heliport designated by Marine Air Control Squadron 4 Detachment B during a cross-training exercise at Marine Corps Air Station Iwakuni, Japan, March 30, 2017. The purpose of the exercise was to simulate a forward arming and refueling points operation, where Marines communicated with Japan Maritime Self-Defense Force helicopter pilots to perform austere landings on a heliport that acted as an expeditionary runway.