 In aviation, this was the pattern. New CEO, new plane. Why? Well, stiff competition between Boeing and Airbus, new technology, and new planes meant better planes. But for the past 20 years, Boeing CEOs broke that pattern. McNarney, he made the decision to not build a new 737. Muhlenberg executed the decision. Calhoun, he is also one of the architects of what they did, what they focused on when the crashes occurred.