|The Tornado GR4 aircraft is capable of speeds of 1,400 mph|
A Royal Air Force navigator pranks the pilot by holding up a sign saying "I’m with stupid."
They were on a training mission in their £13million (over $20 million U.S.) Tornado GR4 aircraft, zooming through a valley in northern Wales.
An RAF spokesman said it was a "light-hearted moment."
BBC News – RAF Tornado ‘I’m with stupid’ prank laughed off by MoD>>
Better pics – Demotix – RAF Navigator makes Plane-spotters smile>>