Scientists at Rolls Royce built a gun specifically to launch dead chickens at the windshields of airliners and military jets, all travelling at maximum velocity. The idea was to simulate the frequent collisions with airborne fowl to test the strength of the windshields. American engineers heard about the gun and were eager to test it on the windshields of new Amtrak high speed trains. Arrangements were made and a gun was sent to the American engineers. When the gun was fired, the engineers stood shocked as the chicken hurled out of the barrel, crashed into the shatterproof shield, smashed it to smithereens, blasted through the control console, snapped the engineer's back rest in two and embedded itself in the back wall of the cabin. The horrified Yanks sent Rolls Royce the disastrous results of the experiment along with the designs of the wind shield and begged the British scientists for suggestions. Rolls Royce responded with a one line memo:............ "Defrost the chicken" Sometimes it does take a rocket scientist!!!