With the new Stranger Things on Netflix a kind of MK Ultra Truth reaching has begun, and maybe this movie is part of that disinformation campaign. If not for the box art and live witnesses (I found about this via The Secret Sun). If no other reason than Cherie Curie, the weird melancholic 'hushed' mood, and the Tangerine Dream music, this would be a winner. It's got more too.
Another one that seems very factual but never has been seen since it was out on--I think Showtime--inn the early 90s (I caught in a hotel room in NJ by accident). Having heard nothing/anything remotely involving a 'truth' to alien visitation up to that point, it was a pretty significant 'accident' in my life.