Tighten the strap on your tinfoil hat: Recently declassified documents show that the US Air Force was working on, and perhaps had already built, a supersonic flying saucer in 1956. The aircraft, which ...

Here’s What You Need To Remember: Rather than a high flying saucer, the Army’s Avrocar was little more than a slow moving hovercraft. The project was canceled in 1961 and the... Key Point: Rather than ...