Sighting 4019: The Believe It or Not Incident - Project U.F.O. [ Project UFO ]

 First aired on FRIDAY, October 20, 1978

Rerun on Thursday, August 30, 1979

This pre-empted what program, exactly??

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

Sighting 4016: The Pipeline Incident - Project U.F.O. [ Project UFO ]

 First aired on Thursday, October 5, 1978

Rerun on Thursday, August 16, 1979