Emergency service response codes South Wales State Emergency Service use two levels of response, depending on what the call-out is and what has been directed of the crew attending the incident by orders of the duty officer: The New South Wales Police Force uses two distinct classifications for responding to incidents. In order to respond 'code red' a driver must be suitably trained and have qualified in appropriate police driver training courses. SA Ambulance Service use a Priority system. Note: Priorities 0 and 3 have been reserved for future use. Priority 9 is used for administration taskings. The South Australian Metropolitan Fire Service, Country
Emergency Service Unit Emergency Service Unit The NYPD is credited with establishing the concept of a police emergency squad ESU is also synonymous with the term Emergency Services Squad (ESS) and Emergency Service Detail (ESD). An ESU operates at the direction of the command staff and responds to emergency and high-risk situations that occur outside the scope of duties of responding patrol and criminal investigation units. ESU members train continually both in-house, with other local, state, federal and military specialized units and sometimes members of a Federal Emergency Management Agency (FEMA) Urban Search & Rescue (USAR) Team. An ESU often provides services analogous