"The 10th Air Division assumed responsibility for the air defense of Alaska south of the Alaskan Range on 1 November 1950. Subordinate units flew numerous interception and training missions. Between June 1957 and March 1960, the division operated and maintained Elmendorf AFB, Alaska, plus several smaller installations. It was replaced by the 5070th Air Defense Wing (for air defense), and the 5040th Air Base Wing (for base operations) in August 1960."