John Barnett had worked for Boeing for 32 years, until his retirement in 2017.
In the days before his death, he had been giving evidence in a whistleblower lawsuit against the company.
Boeing said it was saddened to hear of Mr Barnett’s passing. The Charleston County coroner confirmed his death to the BBC on Monday.
It said the 62-year-old had died from a “self-inflicted” wound on 9 March and police were investigating.
It was a gunshot wound to the head. Its plausible the wound was self inflicted, although its pretty clear Boeing probably did it. They are evil, not stupid.
One thing I learned from NCIS: “investigate suicides as if they were murders”.
Dunno if it was one of the Rules, tho.