germans have made antigravity bell "Die Glocke"
currently, no one knows where it is, but it's assumed to be hidden somewhere in Poland.
then a guy named Hans Kammler got jailed in the USA or whatever and then
"SS official named Hans Kammler later secretly traded this technology to the U.S. military in exchange for his freedom."
if USA military knows about this, why isn't released to the public what it was: an antigravity bell.