Maj. Sean Conley, 36th Mobility Response Squadron director of staff, left, and Staff Sgt. Adam Radamacher, 736th Security Forces Squadron Fly Away Security Team lead, watch U.S. Navy MH-60S helicopters, assigned to the Helicopter Sea Combat Squadron 25, take-off after refueling using a helicopter expedient refuel system during exercise COPE NORTH 2018 at Tinian, U.S. Commonwealth of the Northern Mariana Islands, Feb. 26. Exercise COPE NORTH is a long-standing exercise designed to enhance multilateral air operations between the U.S. Air Force, U.S. Navy, U.S. Marine Corps, Japan Air Self-Defense Force and Royal Australian Air Force. (U.S. Air Force photo by Airman 1st Class Juan Torres Chardon)