PHOENIX -- It's been almost 14 years since Phoenix became the center of the UFO-sighters' universe, thanks to a phenomena known as the Phoenix Lights.
"Greg" is a commercial airline pilot who asked not to be identified. On that night he and his wife were driving home in the West Valley after a date night.
"All of the sudden, with some urgency, my wife said, 'What are those lights?'" Greg said.
They pulled over to get a closer look. Greg had spent years flying choppers in Vietnam and fighter jets at Luke Air Force Base, so he brushed off the odd sighting - at first.
"Then I noticed, 'Wow, no anti-collision lights, no navigation lights,'" said Greg. "I kind of just stood there, watching the lights go overhead. And then I realized, 'Wow, I don't really know what these are!'"
Greg and his wife are not alone. Thousands in Phoenix, Nevada, Tucson, even in northern Mexico have testified to the same close encounter: a V-shaped formation of five lights, moving silently, slowly, at a low altitude.
"I was asking myself, 'Well, what is this?' because I've spent years of my life looking into the sky," said Greg.
Explanations for the so-called Phoenix Lights are as numerous as the sightings themselves. The U.S. military admitted to dropping flares that night southwest of the city, but that doesn't explain the numerous sightings of an actual craft with the five lights hovering overhead.
"I've actually dropped flares from the air in Vietnam," said Greg. "What I saw wasn't flares."
Conspiracy theorists and extra-terrestrialists jumped on the event, insisting this is proof that we earthlings are not alone. Even then Gov. Fife Symington saw them, calling the lights "otherworldly."
As a commercial airline pilot, Greg won't necessarily go there.
"I do wish that I could see them again," Greg said. "When I fly at night now, I kind of keep an eye out, because I'd really like to see that V of lights again someday."
"I don't have an explanation. I don't know what it was," Greg said.
Greg is one of many witnesses testifying in a new documentary called "The Phoenix Lights." The documentary will be shown at 2 p.m. March 13, at the Harkins Theater, located on East Shea Boulevard and Scottsdale Road in Scottsdale.