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.
Your competitors take out contract hits against your whistleblower and you need to have bodyguards to protect them.
And then your head of security and the whistleblower fall in love until at the end of the movie the competitor assassin gets into the court waiting room and the head of security throws themselves into the ninja star’s way and dies in the whistleblower’s arms as the ultimate sacrifice is made for love and corporate profits.
I tear up just thinking about it.