A "WHISTLEBLOWER" claiming to have worked inside the mysterious Area 51 US Air Force base has extraordinarily said the Nevada facility DOES house UFOs recovered from visiting aliens. American Robert Miller recorded a sensational YouTube clip which he said he made to "clear his conscience" as he is "getting old." In the video, seen by more than 300,000 people, he said he was a former marine corps pilot who was recruited to test fly a craft that had been "reverse engineered" from the remains of a Roswell UFO that crashed in 1947. The US Government did not acknowledge the existence of Area 51 until 2013, but it is now commonly accepted research is done there on new USAF spy craft. However, conspiracy theorists are convinced if flying saucers have ever crashed on Earth, the wreckage and alien bodies have been secretly taken to storage in Area 51. One long-running claim is a UFO which allegedly crashed in the New Mexico desert near Roswell in July 1947 and it is now stored at Area 51.