According to the writer at Air Traffic Controllers Who Saw UFO Muzzled by FAA, although a number of air traffic controllers saw the Phoenix lights of this past Monday, they have to keep their mouth shut about it. Evidently, some of them spoke about the lights prematurely and "unofficially."

According to FAA regional chief, Ian Gregor, the official policy of the FAA forbids the controllers from speaking publicly about what they see. Of course, this is one reason that researchers struggle to gain corroboration on sightings around the country, even when they are told about it "off the record."

In another related account, and as if we didn't expect it, the sighting of the lights on 04-21, was debunked almost as quickly as they were reported.

Man Claims Phoenix Lights a Hoax: Witnesses Not So Sure gives you the details on what one man claims. He says that the whole thing was a hoax that he orchestrated by attaching four road flares to helium balloons and releasing them into the air. Now, before his statement is accepted, there is a lot of research to be done to see if what he did could really account for the sightings. The witnesses of the lights don't buy this explanation, do you?