My owd man is an aviation engineer for a private firm one of his companies big subcontractors in the early 00’s was Boeing and they were great to work with, they would design and sell parts abs machinery to them for their smaller commercial planes.
He met a fella called David Calhoun and he was a fast riser, had a reputation for being a bit ruthless and screwing people over to move up. They decided not to renew their Contract with Boeing when Calhoun became a director because he was so money driven it was untrue, wanted things for the fraction of the price but to do the same job, the company who my dad works for walked away. I think they then went to the Far East for the same equipment.
Fast forward a few years and Calhoun is a director at Boeing, along with Dennis Mulenberg.
Mulenberg was the CEO when the two crashes happened, Calhoun is now the president.