A former manager at Boeing who became a whistleblower has been found dead in South Carolina. According to the BBC, John Barnett had given evidence in a whistleblower lawsuit against the company in recent days. The Charleston County coroner said Barnett died of a “self-inflicted” wound on Friday. Barnett had worked at Boeing for 32 years before retiring in 2017. He later spoke to The New York Times about problems at a Boeing South Carolina plant that manufactures the 787 Dreamliner aircraft.