U.S. Air Force Col. Bob Blagg, the commander of the 374th Operations Group, scans the horizon for a drop zone near the island of Ifalik, Federated States of Micronesia, while piloting a C-130 Hercules aircraft during the 62nd annual Operation Christmas Drop Dec. 10, 2013. Christmas Drop started in 1952 as a training mission and has since become the longest-running Department of Defense mission in full operation as well as the longest-running humanitarian airlift in the world.