On February 25th 1942, just after 2am, hundreds of thousands of people witnessed something in the skies above Los Angeles. US army planes scrambled to intercept, while anti-aircraft guns fired over 1,500 rounds for more than two hours. The object was never hit, then it disappeared. The president was briefed and ordered an investigation. Finally the government dismissed the incident and the story was forgotten. The truth behind these real events has never been explained.