Boeing's CEO Dave Calhoun acknowledged the company's mistake regarding a door plug that blew out from a 737 Max 9 during an Alaska Airlines flight. The FAA grounded the fleet for inspections following an incident where a blown panel created a substantial hole in the fuselage of a 737 Max 9. Calhoun said Boeing will work with the NTSB investigation and that the FAA is overseeing inspections to ensure future safety. Calhoun acknowledged Boeing's "mistake" and said every detail matters, emphasizing the importance of safety for passengers and crew.