Agree.UFO’s are far more seen in the US than elsewhere and they also happen to have the most advanced weaponry and technology, it’s no coincidence.
What did you think to that David Fravour chat (if you'd seen it)?
Compelling bloke and knows his air tech inside out it seems. This would mean there are operations above the likes of him.
For me, to traverse light years then there's nothing I can envisage that would achieve that (those speeds reported via pilots are 'potentially' incredibly fast, but you're talking near light speeds to travel from other star systems (and all the issues around that.
Then you enter inter dimensions, quantum mechanics and worm hole territory and that's an easy get out.