Imagine if you were given 2 random pages from a 500 page novel and then you had to give a book report/review.
That essentially sums up the UFO documentaries like this one, always with the same authors trying to pass off fiction as fact.
It's always the same people, labelled as "UFO Researcher" or "UFO Theorists" who project their imagination or hopes or beliefs onto us when they have no actual data or evidence.
Roswell, for example was 100% just crashed cutting edge military balloons made of polypropylene (the first time for such balloons) that were GIGANTIC, bigger than football fields and carried massive payloads... nobody knew about them outside of the small group of military launching them... not even the Roswell Army Air Field knew about them, even 10 years after the 1947 "crash". 1500 were launched, tracked and retrieved in the New Mexico/Nevada areas at that time.
Now what are the chances that advanced aliens came billions of light years across the universe, and crashed their high tech craft into that same location, at the exact same time? LOL. Oh, and they crashed many times.
Well, one of the personalities in this is Stanton Friedman, a Canadian who likes to use his "physicist" title to make him seem important. He essentially lived off the Roswell myth, selling books, and was very defensive and offensive against anybody whose story didn't jive with his. Most of his myth was debunked by the new JJ Abrams 2021 UFO documentary.
There are so many "I believe that..." statements in this documentary that have no place. Who cares what "experts" believe, as it's just their imagination at work. Just the facts please.
The only real disclosure is most likely that the US Military, or most likely their private contractors, are testing very high tech aeronautics and have been for many decades.