The U.S. government is investigating more than 650 potential UFO sightings that were concentrated off the East Coast and West Coast of the U.S., in the Middle East and in the area of the South China Sea, a Pentagon official said. https://cbsn.ws/3USZZ1K Video credit: Department of Defense | CBS News

Most UFO Contacting Attempts Ever To Be Caught On Camera | Aliens UFO Caught on Camera

The history of UFO sightings in North America goes back nearly 80 years. Explore the timeline of some of the most famous sightings and listen to testimonials from witnesses and the experts who dedicate their careers into uncovering the mysteries behind them. Solve the unknown in the brand new series, UFOs: Investigating The Unknown, Tuesdays at 8pm on National Geographic UK. | National Geographic UK