One of the most credible modern UFO incidents occurred at Chicago O’Hare International Airport on November 7, 2006, when multiple United Airlines employees reported a metallic, disc-shaped craft hovering silently over Gate C17. Witnesses described the object as about 6–12 meters wide, rotating without lights, and punching a clean circular hole through the cloud layer before shooting upward at high speed. Despite several calls to air-traffic control, no radar returns were logged, and the FAA officially attributed the event to “weather phenomena.” Pilots and ground staff later went on record anonymously, and the case remains one of the best-documented UAP sightings at a major airport. Subsequent reports of fast-moving aerial lights over O’Hare in 2023–24 have renewed interest in the site among UAP researchers.