Phoenix Lights mass sighting (March 13, 1997)

On March 13, 1997, a widely observed series of lights and a V-shaped formation were reported over Phoenix and surrounding areas; reports came from thousands of witnesses across Arizona. The phenomenon was seen over downtown Phoenix and near Phoenix Sky Harbor International Airport, and received extensive local and national media coverage. Explanations have ranged from military flares to unidentified aerial objects; the event remains a subject of debate and investigation.