NSW police officers have been involved in many notable events in the state's history, including APEC Australia 2007, the 1997 Thredbo landslide, Waterfall train disaster, Grafton bus crash, 1989 Newcastle earthquake, Sydney Hilton bombing, the arrest of serial killer Ivan Milat, the 2004 Redfern riots, the 2005 Macquarie Fields riots and the 2005 Cronulla riots.