The Danish Air Force has opened its UFO files, which were treated as state secret up until today. The archive features information on over 15,000 reported extraterrestrial sightings.
The Air Force stated that most of the sightings in the X-Files remained “unidentified” because the details were not precise enough. However, some of the reports contained enough description to rule out the UFOs as aircraft, weather phenomenon or other human made items.
One such UFO sighting is from 5th January, 1981 at 12:50. A square disc was seen approximately 45 degrees over the frozen land near the Thule Air Base in Greenland. The object then vanished as suddenly as it had appeared. Radar stations at the American base recorded an unidentified flying object on its radar at 12:50. To today, the object of the sighting could not be clearly identified.