Fourth Air Force

Fourth Air Force

The Fourth Air Force (4 AF) is a numbered air force of the United States Air Force Reserve (AFRC). It is headquartered at March Air Reserve Base, California.

4 AF directs the activities and supervises the training of more than 24,200 Air Force Reservists. If called to active duty, most of 4 AF's ready reserve units would be assigned to Air Mobility Command. Forces would also be gained to Air Force Materiel Command, Air Education and Training Command, and Pacific Air Forces.

One of the four original pre–World War II numbered air forces, 4 AF was activated on 18 December 1940, at March Field, California with a mission of air defense of the Southwestern United States and Lower Midwest regions. During the war, its primary mission became the organization and training of combat units prior to their deployment to the overseas combat air forces.

4 AF is commanded by Maj Gen Mark A. Kyle.