The US has a trove of parts and equipment from 'non-human origin' UFOs which have crash landed on earth, a whistleblower claims Former intelligence officer David Charles Grusch said the US is also engaged in top-secret operations that attempt to 'reverse-engineer' the pieces 'The material includes intact and partially intact vehicles,' said Grusch The US has a trove of parts and equipment from 'non-human origin' UFOs which have crash landed on earth, a whistleblower claims. Former intelligence officer David Charles Grusch said the US and other nations are also engaged in top-secret operations that attempt to 'reverse-engineer' the pieces to...