High-ranking US officials witnessed alien spaceships during nuclear missile tests throughout the 1940s. When the first nuclear tests were being carried out in the state of New Mexico, alien ships were spotted hovering over a nuclear polygon on July 16, 1945, Mitchell said.
"White Sands [the desert in New Mexico] was a testing ground for atomic weapons — and that's what the extraterrestrials were interested in. They wanted to know about our military capabilities," said the 84-year-old NASA veteran.
Mitchell also said he spoke with other people, former military pilots and officers who oversaw nuclear bases throughout the last century.
"They told me UFOs were frequently seen overhead and often disabled their missiles. Other officers from bases on the Pacific coast told me their [test] missiles were frequently shot down by alien spacecraft. There was a lot of activity in those days," Mitchell said, as cited by the Inquisitr news website.
The former NASA astronaut is convinced that our planet is being regularly visited by aliens and the US government knows about their existence, but chooses to hide the truth from the public.