 In 1948, Continental Air Command assumed responsibility from ADC for managing Air National Guard and reserve units.When the regular Air Force implemented the wing base organization system, which placed operational and support units on a base under a single wing that same year, the 309th Wing, along with other reserve wings with combat groups on multiple bases, was renamed an air division.The 309th participated in routine reserve training and supervised the training of its assigned groups with the assistance of the 2596th Air Force Reserve Training Center until it was inactivated, in part due to President Truman’s 1949 defense budget, which required reductions in the number of units in the Air Force.