The Oklahoma City Air Logistics Center, based at Tinker Air Force Base, Okla., is the largest ALC in the Air Force Materiel Command and provides depot maintenance, management expertise, installation services and information support for 31 weapon systems, 10 commands, 93 Air Force bases and 46 foreign nations. Mission: The OC-ALC is the worldwide manager for a wide range of aircraft engines, missiles and commodity items. The center manages an inventory of aircraft, which include the B-1 Lancer, B-2 Spirit, B-52 Stratofortress, C/KC-135 Stratotanker, E-3 Sentry and contractor logistics support aircraft; as well as a substantial jet engine inventory ranging from the older Pratt and Whitney TF33 to the newer, state-of-the-art engines such as the GE F118. The center performs depot maintenance on all of its aircraft and overhaul and repair on numerous jet engines, as well as being the technology repair center for automatic flight control, engine instruments, air driven accessories, hydraulics/Pneudraulic/pneumatics and oxygen and life support.