On 28 April 1996 , the SOG responded to the Port Arthur massacre ; gunman Martin Bryant , who was intellectually disabled and mentally ill , was reported to have killed over 30 people , two of whom were children , and was in possession of a 5.56 mm AR-10 rifle and a 7.62 mm FN FAL rifle with large quantities of ammunition
Port Arthur massacre
Port Arthur massacre (Australia)
Tasmania Police Special Operations Group