Boeing's CEO, Dennis Muilenburg, has said that the company made a "mistake" in reference to how it handled the use of a cockpit warning light in the 737 MAX. This light -- which signals a disagreement between sensors in the plane -- was absent on both 737 MAX flights that crashed, and would have potentially helped to avert disaster. To make matters worse, the company refrained from telling regulators and airlines about the problem for a full year. These events took place under Muilenburg's watch, which creates the implication that he was involved in a cover-up. And yet, Muilenburg remains in charge today.