Nocturnal Light A visual sighting of a light on the sky at night. About 35 - 40 % of all reports are nocturnal lights. Nocturnal Disc* A visual sighting of a UFO in form of an structured light seen at night. Daylight Disc A visual sighting of a UFO with distinct shape seen at daytime. Radar Cases UFOs detected on radar. Radar Visual Cases UFOs detected on radar and visually at the same time. About 1 - 2 % of al reports are radar visual cases. Close Encounters of the First Kind A UFO observed within 150 yards. Close Encounters of the Second Kind A UFO that leaves some kind of evidence like burnmarks on the ground or fragments of unknown material. Close Encounters of the Third Kind A UFO with visible occupants. Close Encounters of the Fourth Kind Abductions. Close Encounters of the Fifth Kind Communication between a human and an alien. * Added to the Hynek system later.