For what its worth, I was a Maintenance Technician on the NORAD SAGE Computer System in Nov 1975 the nights that we had multiple UFO incidents at the 24th NORAD region in Gt Falls Montana. The incident I was witness to is described here:
Montana UFOs
These were very interesting nights that I will never forget and I was right there in the Blue Room when these "sightings" occurred and was listening to the controllers talking to the pilots (of the scrambled F-106's).