The only thing they left out was swamp gas as a possible explanation (RIP Hynek). Seems like another whitewash, "it can't possibly be happening" report. If you spend some serious effort on this and stay away from the crazies you'll come to the opposite conclusion of this report. A good starting point is Vallee's books.
I don't know about Vallee, but after being briefly in the defense industry, reading much, and having some experience with aerospace everything seems to fit very well into one of three categories 1) known US aircraft activity either simply misinterpreted or kept secret from the public or even most of the military apparatus, sometimes strongly denied either as a way to disseminate vague information to adversaries or mi…
Just two examples of high resolution UAP videos:
https://www.youtube.com/watch?v=zBQ1Ftj4hPE&ab_channel=OrdoN...
https://www.youtube.com/watch?v=bVmGhxYrkug&t=0s&ab_channel=...
The problem is not resolution per se, but the fact that is quite easy nowadays to manipulate images and videos (I'm not saying these videos are fake, BTW).