The United States government is being asked to re-open an enquiry into claims of UFO sightings. Project Blue Book, run by the US Air Force, was stopped in the late 1960s, after it had looked into more than 12,000 claims.
The request to resume it comes from a group of former government officials and air force personnel from several countries. They all say they have seen UFOs or have conducted research into them.
They say the apparent sightings of flashing lights, huge flying discs and strange high-speed craft are a security concern and should be investigated.
However, the US Air Force says nothing has happened in the past four decades to justify resuming investigations. Project Blue Book was dropped after most of the incidents were found to have innocent explanations.
Do you think it should be re-opened?