Sighting 4018: The Incident on the Cliffs - Project U.F.O. [ Project UFO ]

 First aired on Thursday, October 12, 1978

Rerun on Thursday, July 26, 1979

TV Guide for Rerun on Thursday, July 26, 1979

Side-by-side

And THIS person claims to have the original NBC recording from October 12, 1978!

https://groups.google.com/g/alt.tv/c/9koVBhCfNRs/m/niiCKZXpdwYJ

Is this him, by chance?  https://www.facebook.com/Porkys1982