A new German documentary claims that testing of a secret Nazi aircraft by the USAF is the real conspiracy behind the famous Roswell incident. The Roswell incident took place in early July, 1947. Something crashed in the desert and the USAF didn’t know what it was. They even wrote a press release saying they captured a crashed flying saucer. The next day they retracted that statement and said it was all a mistake. The mysterious debris was just a weather balloon. After that, the incident was forgotten.