The Phoenix Lights
Phoenix Arizona has had very strange UFO sightings in its history, most notably The Phoenix Lights. The phenomena took place in the skies over the U.S. states of Arizona, Nevada and the Mexican state of Sonora on March 13, 1997.
Lights of varying descriptions were seen by thousands of people in a space of about 300 miles from the Nevada line through Phoenix and to the edge of Tucson. There were two distinct events involved in the incident: a triangular formation of lights seen to pass over the state, and a series of stationary lights seen in the Phoenix area.
The United States Air Force (USAF) identified the second group of lights as flares dropped by A-10 Warthog aircraft which were on training exercises at the Barry Goldwater Range at Luke Air Force Base. Unidentified flying objects (UFO) proponents claimed both groups of lights were part of aircraft unknown to man.