Google a couple of things and get back with me:
TR-3B
Die Glocke
Tesla anti-gravity
There is much more possible by manned aircraft than is common knowledge.
It is interesting that Tesla’s papers were confiscated and classified. Still are.
Speaking of that, I had a coworker (10 years +) and engineer friend who spent two years commuting from McCarren to Groom. Guess I’d better end the discussion right there.