Four Japan Air Self-Defense Force, or Koku-Jieitai, F-15J Eagles assigned to the 201st Squadron, Chitose Air Base, Japan, taxi on the flight line during exercise Cope North 2021 at Andersen Air Force Base, Guam, Feb. 11, 2021. The mission of the exercise is to focus on coordination of combined air tactics, techniques and procedures, and enhancing security and stability in the Indo-Pacific region. (U.S. Air Force photo by Staff Sgt. Divine Cox)