A flying saucerlike object hovered low over O'Hare International Airport for several minutes before bolting through thick clouds with such intense energy that it left an eerie hole in overcast skies, said some United Airlines employees. A group of airline employees insist they are in earnest, and they are upset that neither their bosses nor the government will take them seriously. Officials at United professed no knowledge of the Nov. 7 event--which was reported to the airline by as many as a dozen of its own workers. The [FAA] said its air traffic control tower at O'Hare did receive a call from a United supervisor asking if controllers had spotted a mysterious elliptical-shaped craft sitting motionless over Concourse C of the United terminal. No controllers saw the object, and a preliminary check of radar found nothing out of the ordinary, FAA spokeswoman Elizabeth Isham Cory said. The Unidentified Aerial Phenomena ... was first seen by a United ramp worker who was directing back a United plane at Gate C17. The sighting occurred during daylight, about 4:30 p.m. All the witnesses said the object was dark gray and well defined in the overcast skies. They said the craft, estimated by different accounts to be 6 feet to 24 feet in diameter, did not display any lights. All agreed the object made no noise and it was at a fixed position in the sky, just below the 1,900-foot cloud deck, until shooting off into the clouds. A United mechanic who was in the cockpit of a Boeing 777 [said] I know that what I saw and what a lot of other people saw stood out very clearly, and it definitely was not an [Earth] aircraft."