U.S. Air Force and U.S. Navy members perform search and rescue and medical evacuation operations in exercise COPE NORTH 18 over Tinian, U.S. Commonwealth of the Northern Marianas Islands, Feb. 21, 2018. COPE NORTH enables U.S. and allied forces to train humanitarian assistance/disaster relief operations from austere operating bases, enhancing our capacity and capability to respond in times of crisis. (U.S. Air Force photo by Airman 1st Class Christopher Quail)