UFOs detected traveling at "unprecedented speeds" by US Navy nuke submarines may come from an underwater base, it has been claimed. The Pentagon is said to have confirmed footage showing a mysterious pyramid as genuine ahead of a potentially explosive official report on numerous UFO sightings. The submarine sightings were revealed by Tom Rogan from the Washington Examiner. Rogan told Fox News' Tucker Carlson it is not thought the craft could be technology from a foreign power. He said: "I have heard from very good sources and that the US Navy has the data. "I think what we may well be looking at a true unknown. "Relevant to this video, an area we will learn more about is the interaction between US Navy submarines, nuclear ballistic submarines and attack submarines, picking up sonar contact of things moving at hundreds of knots under the water. "Which is to say, intelligently controlled machinery that is not understood to be in the possession of the United States, China or Russia, which are the most three most advanced countries in terms of military aviation. "Researching this, there isn't anything that we have, top secret information about what China or Russia have or what we have at Area 51, that can do what these things do in terms of the variable performance."