 The unit also provides rescue and bomb disposal support, canine policing, and armoury services.Established in June 1991, the State Protection Group replaced four former specialist units; the Special Weapons and Operations Section (SWOS), the Witness Security Unit, regional Tactical Response Groups and the Police Rescue Squad.Later other sections were also added to the command including the Police Armoury, Negotiation section, Bomb disposal and Dog Unit.