An anonymous reader writes "A UFO had been witnessed yesterday by dozens of employees at the O'Hare International Airport in Chicago, Illinois, the Chicago Tribune reports. From the article: "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 who observed the phenomenon." The sighting occurred during daylight at 4:30 p.m. local time, just before sunset. "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.""