Dave Calhoun appeared before a US Senate hearing where he was grilled on the company's safety practices and retaliation against whistleblowers. He broke,” Mr Blumenthal said, referring to Barnett's death. Mr Calhoun was unable to say how many of Boeing's employees were fired for retaliating against whistleblowers. Frustration over Boeing's safety concerns have also spilt into the private sector. Mr Calhoun is expected to step down as Boeing chief executive this year.
