(FILES) In this file photo taken on October 30, 2019 Boeing CEO Dennis Muilenburg arrives to testify at a hearing in front of congressional lawmakers on Capitol Hill in Washington, DC. - Boeing on December 23, 2019 replaced its embattled chief executive, Dennis Muilenburg, saying a change was needed as it attempts to restore its reputation amid the protracted 737 MAX crisis. Boeing named Chairman David Calhoun as its chief executive, saying the company needed to "restore confidence" and "repair relationships with regulators, customers and all other stakeholders." (Photo by Olivier Douliery / AFP)