Source site
https://patents.google.com/?inventor=Salvatore+Cezar+Pais
Sorry for the crazy post on Google Patons you can read about Dr.salvatore pais inventions which is very similar to ufo technology that is under the US Navy control. I provided photos and the article that explains things better. The point being that the UFOs flying navy ships are actually US technology showing off.
(Internal mass reduction device)