Elsewhere, a post discussing the nature of cults discusses whether atheism is a cult. Atheism significantly associates with those who identify as Debunkers. Debunkers, like Degrass Tyson, happily trot out disinformation and propaganda in furtherance of their views, and scrupulously avoid considering facts that are contrary. That level of partisanship plainly crosses the line of cultism. ...Unless they are being paid... Sagan was tapped to consult on UFOs early in his career, and there are rumors... Perhaps before Sagan was Donald Menzel, the original UFO debunker.

To your point, Menzel's name appeared in papers purporting to brief officials on Roswell. The documents list Menzel as a member of MJ-12. While the authenticity of these papers remain disputed, their content could not have come from outside the CIA. Indeed, no one had any idea that Menzel had a role in evaluating UFOs for the security agencies, but he wrote extensively to debunk UFO's. Apparently the CIA tasked him with developing disinformation. So, your intuition on Degrass Tyson is spot on.

The proposition that the vast gulfs of space could be traversed requires physics and technology that don't exist, so far as anyone can say. And yet, the quantity and quality of reports show significant consistency. Every intelligence agency has UFO files that have been found with FOIAs, and a lot is available on-line. (Personally, I love the FBI files on cattle mutilations.) Some of these files document other utterly bizarre incidents. Vast troves of information remain classified, much of it technical. As Harry Reid recently said, the Pentagon disclosures are just a sliver of what is in hand. AATIP's Bigelow and Elizondo have both said wreckage has been recovered.

Don't expect any love within Agnostic.com. Out of the many UFO posts I've put up, very few have responded. Sadly, this group has extremely limited curiosity in this regard.

[agnostic.com]

Remember the curse of UFOlogy, that so many researchers have died without getting satisfaction from the government. Perhaps the forthcoming report....?