The 317 Maintenance Group AMC (Air Mobility Command) is a key unit within the United States Air Force responsible for maintenance operations. This group operates under the Air Mobility Command, which oversees the U.S. Air Force’s strategic air mobility mission. The primary role of the 317 Maintenance Group is to ensure the readiness and operational capability of its aircraft fleet, including the C-5 Galaxy, C-17 Globemaster III, and KC-10 Extender. The group maintains these complex and critical assets through various maintenance activities such as repair, overhaul, and upgrades. It is stationed at Dover Air Force Base in Delaware.