By
Hugo Daniels and Emily Saul
An American pilot who claims to have chased an alien aircraft has warned world leaders to take UFO sightings seriously.
Retired US Navy pilot commander David Fravor spoke out in support of ex US government intelligence officer Luis Elizondo, who last week revealed he ran a real life "X Files" UFO research department at the Pentagon named the Advanced Aviation Threat Identification Program (AATIP) funded by £16 million ($22m) “black ops money” from Congress.
Elizondo secured the release of previously classified US Defense Department videos of UFO encounters - one of which shows the craft Fravor saw darting off at an incredible speed.
Commander Fravor, 53, was flying one of two fighter jets on a routine training mission about 100 miles into the Pacific ocean off San Diego when they were diverted to check out an aircraft spotted on radar from their navy cruiser the USS Princeton.
The operations operator said they had been tracking up to a dozen mystery aircraft over two weeks but hadn't had manned planes deployed when they showed up.
The object first appeared at 80,000 ft, then hurtled towards the sea, stopping at 20,000 feet and hovering before dropping out of radar.
