It's the most famous military installation in the world, yet it doesn’t officially exist. Area 51, a site for covert Cold War operations, has long been a magnet for crackpots, conspiracy theorists, and the overly curious. While there may not be truth to the rumors that Area 51 is a haven for UFOs and extraterrestrials, it's clear that our government has been up to something in Area 51 for decades, and it turns out there is a kernel of truth to even some of the wildest speculation. Now, after ye...