justinian on 08 September 2012
Over a decade or longer ago, I heard of Darpo (or whatever it was called back then) inventing working stuff from airplanes that were also submarines to exoskeletons and other shit I can't even remember.
I have heard of none of these inventions since.
Either they failed to prove useful or they worked remarkably well and is now part of the US top secret weaponry.
I am most likely to believe it is the former.
