Extraterrestrial life: what is a USO and why would it have displaced UFOs?. What specialists say about this phenomenon.
The best-known cases of 'UFOs' have to do with military bases, especially in the United States. Retired US Navy Commander David Fravor described how a fellow pilot had revealed to him a UFO encounter. An example that comes to light is that of Lake Baikal, Russia, the scene of sightings of UFOs and 'osnis' since the Soviet era.