All scams. The whistleblowers never actually reveal anything specific. Show a damn photo for once.
UFO Related Discussion

Any alien civilizations, who are advanced enough to travel presumably hundreds, thousands, or more light-years to visit us, probably has the technology to find a way to not be photographed.

Aliens that advanced shouldn't care about that one way or another. Why are they so embarrassed to land on 5th avenue in Manhattan? No technology exists to travel light-years let alone thousands of them.

They say this crap every single time and never just show the damn photos. Show just one. That's it. Out of all these 50,000 cases or whatever, show the public 1 photo of a crashed alien craft or non-humanoid bodies found inside. If they were really so desperately trying to keep this stuff a secret they wouldn't even risk having these public hearings, just to embarass themselves during it tripping over themselves constantly.
Secret UFO Retrieval Programs
https://www.yahoo.com/news/air-force-veteran-whistleblower-claims-232514734.html