Reported UFO sighting · Pilot report · Near Mount Rainier, Washington, USA
Kenneth Arnold sighting
A search pilot timed nine shiny objects at about 1,200 mph in 1947, and the word 'saucer' entered the story
His speed rests on a distance he estimated from the cockpit. How far can a single pilot's timing be trusted?
Photo: Associated Press, Public domain, Wikimedia Commons