Was used in Area 51: http://news.nationalgeographic.com/news/2011/05/110520-area-51-secret-hid-craft-base-declassified-a-12-plane/ http://news.nationalgeographi

Was used in Area 51: 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-... And while not images per se (though they did use blow up equipment), there's the Ghost Army: https://en.wikipedia.org/wiki/Ghost_Army https://en.wikipedia.org/wiki/Ghost_Army Edit: To clarify, the Ghost Army used inflatables not to hide, but to mimick and deceive, but the concept is similar.