A former intel officer testified to a house committee that the US has had a UFO retrieval program for years, and that we've recovered non-human "biologics" from the crash sites. He has no direct knowledge of anything, by his own admission, but he's willing to provide more detail to congress in a secure facility.
I'll keep the possibility open, I guess, but it sounds like absolute bullshit for a variety of reasons.
I like the theory that all of the crashed alien ships are from the aliens "B-Team" and the reason they keep crashing is because the actual good pilots are off doing actually important things and the ones we see are just bad at their jobs.
It’s also funny how all these aliens keep crashing into the US, where three-letter agencies are fantastic at coverups, and none of ‘em end up in countries where it’d be much harder to hide something like this.
The U.S. recently passed a law requiring the government to start disclosing all known(lol) information on UFOs/UAPs. The first congressional hearing was yesterday but was basically a verbal redacted/censored CIA document from the 60s.
About half of what was asked was responded with "I can't say in public."