Operation Christmas Drop is a tradition that started in 1952 that serves as a training mission for the U.S. Air Force. It has since become the longest-running U.S. Department of Defense mission in full operation, and the longest-running humanitarian airlift in the world. Supported by the local communities of Guam, it is primarily conducted from Andersen Air Force Base and Yokota Air Base, and targets Micronesia.

Kapingamarangi is an atoll and a municipality in the state of Pohnpei of the Federated States of Micronesia. It is by far the most southerly atoll or island of the country and the Caroline Islands, 300 km (190 mi) south of the next southerly atoll, Nukuoro, and 740 km (460 mi) southwest of the main island of Pohnpei state; it forms a Polynesian outlier.