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Welcome to Headquaters Fourth Air Force!

Headquarters Fourth Air Force and its 604th Regional Support Group (RSG) are located at March Air Reserve Base, Moreno Valley, Calif. 

Fourth Air Force is one of three numbered air forces assigned to the Air Force Reserve Command (AFRC), Robins Air Force Base, Ga.

The staffs of 4th AF and 604th RSG are dedicated to ensuring their units and personnel are fully prepared to accomplish all assigned missions in support of national objectives and the global operations.

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