This 23 December 2019 video says about itself:
Boeing CEO Dennis Muilenburg has resigned. The aircraft manufacturer faced multiple setbacks this year, including industrial scandals after two fatal crashes of Boeing’s 737 MAX jetliner and the aborted flight test of its Starliner spacecraft. An inquiry revealed major problems with regulatory oversight of the company’s operations. Muilenberg’s departure is effective immediately. He’ll be replaced by Chairman David Calhoun.
Translated from Dutch NOS TV today:
Boeing has been around for over a hundred years and is the largest industrial exporter in the United States. The corporation is sometimes called the flagship of US American industry. In addition to passenger and cargo aircraft, the company also makes military equipment and spacecraft.