A Missouri engineer reported that "balls of light" seem to be following him since 2006 and range in size from 15 feet in diameter to up to 30 feet, according to testimony from the Mutual UFO Network (MUFON) witness reporting database.
"The first sighting involved a very close encounter with the light, and since then he sees lights following him in his vehicle wherever he travels in Missouri and nearby states," according to MUFON.
"He is a boiler engineer for power plants and does a lot of travel. The balls of light simply appear and disappear, and do not move away....