Koku Jieitai (Japan Air Self-Defense Force) Tech. Sgt. Atsushi Oyaizu, assigned to Aero Medical Evacuation Squadron, Komaki Air Base, Japan, prepares for a medical evacuation aboard a C-130J Hercules assigned to the 815th Airlift Squadron, Keesler Air Force Base, Miss., during a Cope North 20 (CN20) mass casualty exercise at Rota, U.S. Commonwealth of the Northern Mariana Islands, Feb 20, 2020. Service members from the U.S., Royal Australian Air force, and JASDF honed their Humanitarian Assistance and Disaster Relief (HADR) skills by providing emergency medical care for simulated patients. Cope North enhances U.S. relations with regional allies and partners by demonstrating resolve to promote security and stability throughout the Indo-Pacific. (U.S. Air Force photo by Staff Sgt. Curt Beach)