On the 24th June 1947, pilot Kenneth Arnold observed nine strange objects flying in formations over Mount Rainier, Washington. He had a second sighting five days later when he saw 20-25 brass-coloured objects within 400 yards when flying over the La Grande valley. This started the UFO hysteria. The term "Flying Saucer" was used by Kenneth Arnold to describe how the UFOs moved in the air. A misunderstanding that it was the shape of the UFOs he described gave birth to the now classical description "Flying Saucer"