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Royal Australian Air Force Sergeant Karl Penny, 37th Squadron loadmaster, pushes out a bundle as Leading Aircraftman Stephen Manila, 37th Squadron Avionics Technician, looks on during the 66th Operation Christmas Drop, Dec. 10, 2017. OCD is the longest-running Department of Defense humanitarian airlift training operation and will provide nearly 25 tons of critical supplies to 56 Micronesian islands this year impacting about 20,000 people. (U.S. Air Force photo by Staff Sgt. David Owsianka)