**Q: Who is being replaced at Boeing?**
A: The head of Boeing's defense and space business is being replaced as part of the company's efforts to address issues with troubled contracts.
**Q: Why is Boeing making this leadership change?**
A: Boeing is making this change in an attempt to fix ongoing problems related to its defense and space contracts.
**Q: What challenges is Boeing facing in its defense and space sector?**
A: Boeing is facing challenges related to troubled contracts, which may include delays, cost overruns, or performance issues.
**Q: What impact could this leadership change have on Boeing's defense and space business?**
A: The leadership change could lead to new strategies and approaches aimed at resolving existing contract issues and improving overall performance in the defense and space sector.
**Q: Is this the first time Boeing has made leadership changes in its defense and space division?**
A: The article does not specify if this is the first time, but leadership changes are not uncommon in large corporations facing significant challenges.