My guess is this has nothing to do with age related metal fatigue. Rather, it will likely be something much more preventable. We've already lost too many flyers and airframes to high bank angle maneuvers. Will be interesting to see what is blamed as the cause in the final report. We can armchair all day on what "might have happened". But the BUFF is notorious for having an unrecoverable mode during high bank angles. And all crew lost? Smacks of low altitude. Who knows.