Ten years ago in Arizona's capital, thousands of people reported seeing a massive, v-shaped line of lights. Some government officials later said military flares caused the confusion. But Gary Tuchman spoke with one former governor who's now saying they didn't look like flares to him. GARY TUCHMAN, CNN REPORTER: Fife Symington ... was the Republican governor of Arizona for six years. FIFE SYMINGTON: If you had been here ten years ago, and looked at the lights and the view, you would have been astounded. TUCHMAN: Governor Symington is referring to what is now known as the Phoenix lights -- an object videotaped by many and seen by thousands over several nights in the Arizona sky in 1997. It was described by witnesses as larger than a football field and silent. The governor, a Vietnam Air Force veteran, had never publicly acknowledged seeing it until now. SYMINGTON: I suspect that unless the Defense Department proves us otherwise, that it was probably some form of alien spacecraft. TUCHMAN: So why didn't he say anything then? Partly he says, because he didn't want people to panic. UFO enthusiasts were not amused, especially since the governor was believed to have seen nothing. But now he's coming out. SYMINGTON: The lights were really brilliant. And it was just fascinating. It was enormous. It just felt otherworldly. TUCHMAN: Symington will be talking about this in an updated film about UFOs called 'Out of the Blue.' Governor Symington says he did tell his family, friends, and staff about what he saw early on. SYMINGTON: I still behind the scenes tried to investigate it, but I got nowhere.