 On 1 July 1958, the Utah Air National Guard 191st Fighter-Interceptor Squadron was authorized to expand to a group level, and the 151st Fighter-Interceptor Group was established by the National Guard Bureau.The 191st FIS becoming the group's flying squadron.Other squadrons assigned into the group were the 151st Headquarters, 151st Material Squadron (Maintenance), 151st Combat Support Squadron, and the 1151st USAF Dispensary.