My states(new south wales)equivalent to the american swat is the SPG(state protection group)Their principal roles are: .Protecting endangered witnesses; .Resolving siege and hostage situations, as well as armed offender situations; .Providing a negotiation service in high risk and critical situations; .Undertaking searches of premises in high risk situations; .The arrest of armed and dangerous offenders; .Escorting and securing dangerous prisoners in high risk situations; .Providing support services for major operations; .Rescue and bomb disposal operations; .Counter-terrorism and hijacking operations; .The escort and security of VIPs, internationally protected persons, Heads of State; .Building security through the Security Management Branch; and .Providing specialist engineering services and supply of ammunition and firearms for the NSW Police Force through the Armoury The SPG has various roles such as the tactical operations group, bomb disposal, negotiation, police rescue and negotiations. Those are the main roles of the SPG