On 13 March 1997, residents across Arizona reported unusual lights. The most discussed reports describe a large formation moving over the Phoenix area during the evening. Later that night, military flares were dropped during a training exercise near the Barry Goldwater Range, creating a second, more stationary display visible from parts of the city.
The two episodes matter because they have different likely evidence and different witness positions. A wide formation reported by people along the route is not the same observation as lights descending or hanging over the horizon later in the evening. Video and photographs exist, but they do not provide a single unambiguous record of one object.
Phoenix Lights remains a major mass-witness case because the reports were widespread, the event occurred in a media-saturated region, and the flare explanation did not address every earlier account. The most careful reconstruction keeps the formation reports, the flares, military exercise records, and later public memory separate.
13 MAR 1997EARLY REPORTS
Witnesses in Arizona report lights or a large formation moving across the evening sky.
EVENINGFORMATION ACCOUNTS
Observers along a broad route describe a line or object with lights. Details vary with location and viewing angle.
LATER THAT NIGHTMILITARY FLARES
Flares from a training exercise appear over the range and remain visible from distant vantage points.
AFTER 1997ONE PUBLIC STORY
News, video and documentaries merge the formation and flare reports into the single “Phoenix Lights” label.