An investigator has claimed that the US military has been shooting down UFOs and building their own alien craft.
The US military have been accused of shooting down UFOs
Aviation expert Michael Schratt has proposed the theory that Air Force pilots have been taking out extraterrestrials and experimenting with the crashed ships.
Schratt suggests that the mystery objects that have been seen in Earth's skies might not be aliens after all and claims that US Navy pilots have been alarmed by UFO sightings as they do not have the security clearance to know about the technology.
He said: "They might be convinced it is ET but how are they going to know what's going on in the bowels of Air Force plant 42? These people will stop at nothing to make you think that we're dealing with an ET craft."