This appears to be well sourced, going back to the '40s. There are references to zero point energy, diseases from contact between individuals and Non-Human entities, magnetic field drives, antigravity, craft being shot down, etc.
If I’m not mistaken, I believe this is what Knapp gave Rep. Burchett.
Just commenting to state the obvious just in case
… Are you the “some” in “Some people claim…”?
someone from irl I trust