According to the BBC’s Newsnight programme.
Report fuels spy plane theories
The UK knows more than it is saying about top secret American aircraft projects, recently declassified documents reveal.
Deep inside a previously secret Ministry of Defence report are a few pages which will reignite one of the biggest internet conspiracy questions - Is the US Air Force building secret spy planes which can cross the sky at 3,000mph?
The plane, which is often referred to as Aurora, is supposed to be a follow on from the U2 spy plane and the 2,000mph SR71 Blackbird, both of which were first developed and flown in secrecy as ‘Black’ projects.
WATCH THE REPORT ON NEWSNIGHT 14 JUNE AT 2230BST/2130GMT ON BBC TWO IN THE UK AND LIVE ON THE NEWSNIGHT WEBSITE.