Authorities in South Carolina have ruled the death of Boeing Whistleblower John Barnett a suicide after a more than two-month-long investigation. The 62-year-old Barnett’s body was found in his orange 2015 Dodge Ram on March 9 during a welfare check by workers at the Charleston Holiday Inn where he was staying, according to WCBD-TV. He was declared dead at the scene from “what appeared to be a self-inflicted gunshot wound,” the Charleston County Coroner’s Office reported initially. Evidence gathered at the scene, including security footage from the hotel’s camera system, appeared to back up th…