U.S. Air Force 18th Civil Engineer Squadron and Japan Air Self-Defense Force Southwestern Civil Engineering Group service members conduct a rapid airfield damage repair exercise Aug. 30, 2019, at Naha Air Base, Japan. The bilateral exercise enables USAF and JASDF engineers to more effectively coordinate combined, large-scale contingency response in the event of attacks on military airfields on Okinawa. (U.S. Air Force photo by Staff Sgt. Peter Reft)