Special Constables have the freedom, to some degree, in the choice of Borough they work in, their duties and hours. The teams in which Specials work depends on their BCU - some choosing to task their Specials to Safer Neighbourhoods Teams (known in other constabularies as Neighbourhood Policing Teams), others to their Emergency Response and Patrol Teams (known colloquially as Response Teams), whilst others work on a variety of other local portfolios such as the Criminal Investigation Department, Safeguarding or with schools. Additionally, there are Special Constables who work for more specialist and non-local policing units such as the Marine Policing Unit, Heathrow Airport OCU (ID), Organised Crime, Roads & Transport Policing Command.