Ted Colbert, the head of Boeing's defense, space, and security unit, is leaving the company as part of the first executive changes implemented by the new CEO. This decision comes as Boeing faces challenges with troubled contracts, and Colbert's departure signals a potential shift in strategy for the defense segment. The company aims to rectify ongoing issues, including significant financial losses and operational difficulties in its defense and space divisions. Colbert's exit marks a notable moment in Boeing's leadership overhaul as the company strives to regain stability and public trust.