His name would become forever linked to one of the bloodiest episodes in biker gang history – the 1984 Milperra massacre, when Comancheros and rival Bandidos clashed in a battle involving guns, knives, machetes and baseball bats. Speaking to the Record in 2015, Jock said: “In the old Glasgow days you never backed off, that’s how you survived. The gang was run by Jock like a private army, with military drills, lines of command and even a swastika in one corner. View 4 Images Biker gang Massacre Sydney Australia September 1984 shows the aftermath of the Milperra Massacre at the Viking Tavern in 1984Within minutes, gunfire erupted. ‌Jock eventually left the Comancheros in 2003 and went on to work as a fire captain for 20 years.