The regiment formed a key element of the security force in place for the Sydney Olympic Games in 2000 , and in the lead-up to the event the regiment underwent a period of modernisation , acquiring new equipment and capabilities , including the ability to respond to chemical , biological and radiological threats , as well as developing techniques for the clandestine boarding of moving ships at night . During the Games two SASR squadrons were available for counter-terrorist operations , with one designated to respond to incidents in Sydney and Canberra , while the other was on standby for incidents elsewhere . Defence involvement in domestic security increased after the terrorist attacks in the United States on 11 September 2001 , and the unit has since formed part of the security force for a range of international sporting and political events held in Australia , including the Commonwealth Heads of Government Meeting at Coolum , Queensland in March 2002 , and the visit of US President George W. Bush to Canberra in October 2003 . The SASR maintains TAG ( West ) to respond to incidents on the west coast of Australia . It also provided the training and use of their facilities to raise a second Tactical Assault Group in the 2nd Commando Regiment
Commonwealth Heads of Government Meeting
Commonwealth Heads of Government Meeting 2002
Special Air Service Regiment