FYI,
Inventor plans 'invisible walls'
The inventor of an "invisibility" cloak has said that his next project will be to develop the technology to allow people to see through walls.
http://news.bbc.co.uk/2/hi/technology/3791795.stm
Now imagine that technology applied to troops, tanks, planes & ships, and one has a formidable stealth army.
Isn't there a legend of the US Navy experimenting w/ making ships invisible back in WWII and the result was the Philadelphia Experiment?