One of these monster devils will suddenly have a major structural failure AT speed and AT altitude, and the poor bugger driving it won't have time to hit his radio transmit button before he's in minus sixty degree air, and flying along with the thousands of independent and disconnected little pieces that used to be his airplane.
If it happens over deepwater, it could take months to even find the debris field...
And no one will remotely conceded that the forementioned cracks had anything to do with it...