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.
You are just justifying being suspicious. I’m suspicious too. You don’t need to convince me of rhay.
But it’s 100% possible for them to be willing to kill him but he still killed himself. Right now I’ve seen no evidence that they did it. It’s all blind speculation.
I didn’t say they did although I would personally place it at like a 60% likelihood. Obviously there’s no evidence, this literally just happened.
Just wanted to be clear that I live in reality and no one has the security camera footage yet.