Here's a link that explains all the fakery used at Area 51 including the fake cardboard planes to fool infrared. http://news.nationalgeographic.com/news/2011/0

Here's a link that explains all the fakery used at Area 51 including the fake cardboard planes to fool infrared. http://news.nationalgeographic.com/news/2011/05/110520-area-51-secret-hid-craft-base-declassified-a-12-plane/ http://news.nationalgeographic.com/news/2011/05/110520-area-...