THE NATION; On March 13, hundreds of people reported an enormous object, or objects, in the night sky, the most confounding UFO report in 50 years. So far there is no explanation, but the government is not investigating. Local and federal agencies say it's each other's jurisdiction.

``I'll never be the same,'' Bill Greiner, 51, a cement truck driver, says. He was hauling a load down a mountain north of Phoenix when he saw two brilliantly lit orbs, shaped like spinning tops. ``Before this, if anybody'd told me they saw a UFO, I would've said, `Yeah, and I believe in the tooth fairy.'

So what did Greiner and everybody else see? That question has rattled around this state for three months. Officials at Luke Air Force Base in nearby Glendale are bombarded with calls for an investigation, even though the U.S. government is officially out of the UFO business.