Spokane Air Defense Sector
…Squadron (part of the 84th Fighter Group) converted to F-106As, it became the first combat ready squadron flying Delta Darts. In May 1959, the wing's 4721st Air Defense Group at Larson was discontinued and its 538th Fighter-Interceptor Squadron transferred directly to the wing On 15 March 1960, the wing's 636th, 637th, 822d…