In this episode, Craig and Sarah take on the extraordinary Chicago O’Hare case of November 2006 – a mass sighting of a flying saucer hovering over a United Airlines airport gate. The incident was witnessed by multiple aviation professionals, pilots and passengers. The immediate aftermath of the event was captured in real time by audio recordings of communication between the airport’s Air Traffic Control tower and airline staff, but the sighting was dismissed by the US government’s Federal Aviation Administration as a weather phenomenon.