47th COMMUNICATIONS GROUP, COMMAND
This is the insignia for the squadron / group supporting HQ, Air Defense Command / North American Air Defense Command assigned to Ent AFB, (Later; at) Cheyenne Mountain Combat Operations Center, and finally at Peterson AFB, CO (Dates are from Pete Field 01 Jul 1966 - 01 Oct 1979. After ADC inactivated the Group was transferred to Strategic Air Command, and with the stand up of Space Command, it became a Spacecom asset. I only have the Insignia as USAF-HRA failed to locate the supporting documents.
Terry L Horstead