U.S. Air Force Lt. Col. Carlisle Norman, 109th Airlift Wing evaluator pilot, performs pre-flight checks on an LC-130 Hercules on the flightline at Joint Base Pearl Harbor-Hickam, Hawaii, March 7, 2020. The crew was supporting Operation DEEP FREEZE. The U.S. military began its ODF mission in 1955. (U.S. Air Force photo by Staff Sgt. Mikaley Kline)