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A U.S. Air Force C-130J Super Hercules flies over Tinian, U.S. Commonwealth of the Northern Mariana Islands, during an aeromedical evacuation mission during exercise COPE NORTH 18, Feb. 19. CN18 is a PACAF-sponsored, 5th Air Force conducted, Joint/Combined Tri-Lateral Field Training Exercise (FTX) designed to develop synergistic Humanitarian Assistance and/or Disaster Relief Operations, and increase interoperability of U.S. Air Forces, Royal Australian Air Force (RAAF), and the Koku Jieitai (Japanese Air Self Defense Force).