Two British pilots were killed Sunday when their Tornado GR4 aircraft was shot down by a U.S. Patriot missile in a friendly fire incident.

CNN: British soldier killed in combat

DOHA, Qatar (CNN) -- The pilot and co-pilot aboard the British Tornado GR4 aircraft that was shot down by a U.S. Patriot missile are dead, London's Defense Ministry has said.

CNN: Pilots dead after Patriot accident

It revealed only one of the Tornado GR4 pilots saw the glider and while taking avoiding action its effectiveness would have been marginal because of the speed the jet was going.

BBC: Tornado