It seems the US Federal Aviation Administration has a unique device for testing the strength of windshields on airplanes. The device is a gun that launches a dead

en at a plane's windshield at approximately the speed the plane flies.
The theory is that if the windsheild doesn't crack from the
carca ss impact, it'll survive a real collision with a bird during flight. It seems the British were very interested in this and wanted to test a windshield on a brand new, speedy locomotive they were developing.
They borrowed the FAA's

en launcher, loaded the

en and fired. The ballistic

en shattered the windshield, went through the engineer's chair, broke an instrument panel and embedded itself in the back wall of the engine cab. The British were stunned and asked the FAA to recheck the test to see if everything was done correctly.
The FAA reviewed the test thoroughly and had one recommendation:
"Use a thawed

en"
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