Any decent military is going have crash retrieval teams. It’s called CSAR - combat search and rescue. If a Russian or Chinese jet crashes somewhere neutral, we are going to race to get there. If it’s our own F-35, we will get there even faster and probably fight anyone who tries to get there first. I imagine you would do this for any interesting craft that crashes.
Exactly, and when something crashes in the ocean it might be full off sea weed errr, I mean non-human biologics. And if equipment from foreign nations were recovered of course they’d get reverse engineered.
Knowing how secretive militaries tend to be about their missions … of course the whistleblower gets stonewalled when trying to inquire about it.
I haven’t seen a single claim that couldn’t be explained with something mundane.