What's more likely though: military experts who can't possibly know everything going in all aspects of not just the entire US military but also all of the world

What's more likely though: military experts who can't possibly know everything going in all aspects of not just the entire US military but also all of the world's militaries AND the private sector - OR - things are extraterrestrial in origin I'm sure the are aliens out there, but I think jumping to the conclusion that all of these reports are alien technology leaps right over a ton of possible reasonable explanations.