After ongoing safety concerns and production delays, Boeing finds itself in the middle of a significant leadership shake-up. It is raising questions about the future of the aircraft manufacturer. CEO David Calhoun’s decision to step down by the year’s end comes along with growing pressure following a series of safety incidents, including a panel blowing off a Boeing 737 Max jetliner during a January flight. Calhoun’s departure is part of a broader restructuring effort aimed at navigating through future...