A low-cost low-altitude bundle of donated goods drops to Lukunor Atoll, Federated States of Micronesia, Dec. 9, 2015, during Operation Christmas Drop. This year marks the 64th year of Operation Christmas Drop, which began in 1952, making it the world's longest-running airdrop mission. This is the first ever trilateral training event that includes additional air support from Japan Air Self-Defense Force and Royal Australian Air Force C-130 aircrews. (U.S. Air Force photo by Osakabe Yasuo/Released)