I think you guys are just a little mislead... the question isnt whether or not stealth tech is derived from alien technology... the question should
be, is there any alien technology period?
The answer appears to be NO.
MagnetoHydrodynamic propulsion has been studied since 1889 by Nikola Tesla, and was further refined in the 1920s by Thomas Townsend Brown. In 1952,
Brown caught the interest of the USAF who incorporated his technology in Project Winterhaven, a project involving over 10 aerospace manufacturers to
develope and build an MHD drive vehicle for military use with a speed in excess of Mach 3.
www.abovetopsecret.com...