Famous UFO sightings include the Roswell Incident (1947), Rendlesham Forest (1980), Phoenix Lights (1997), Kenneth Arnold’s sighting (1947), Belgian UFO Wave (1989-90), Hudson Valley (1982-83), Westall School (1966), Shag Harbour crash (1967), O'Hare Airport (2006), and Gulf Breeze (1987-88). Each drew attention due to multiple witnesses, strange craft, and lasting mystery.