[cgbg]

There is one book on the alleged Navy Secret Space Program btw:

https://www.amazon.com/Secret-Program-Extraterrestrial-Alliance-Programs/dp/0998603805/

[RoosterRedux]

Sallas' account may be the Gospel truth, but I would think that, if there had been a breakthrough in antigravity propulsion technology in 1942, we would have seen evidence of it in modern aircraft.

We're talking about 80+ years since then.