Any conspiracy theorist worth their salt will tell you there's plenty of proof UFOs exist - but it's all stashed away in government files.
But before you shrug them off as someone who needs to lay off The X-Files for a bit, they're telling the truth.
Over the years there have been numerous examples of previously secret or sensitive information being made public, and when it comes to 'declassified' information, it doesn't get much more mind-blowing than what has been kept under wraps by the US government.
War atrocities, Bigfoot, under mind control, secret nuclear testing, and even the creation of cyborg cats designed to spy on the Russians - if these are what they want us to know, can you imagine what they still have to hide?
Here we look at eight shocking secrets declassified by the US Government...
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