VINCENNES, Ind. (We Are Knox County) - We are learning more information about the death of a man who helped organized Vincennes’ annual Fourth of July fireworks show. According to the Knox County Coroner’s Office, 73-year-old Robert “Bob” Johnson died Friday following a “fireworks-related incident” that occurred in Lawrenceville, Illinois. An autopsy performed on the morning of July 5 determined that Johnson died as the result of a traumatic brain injury sustained while setti