The Communication Centre is staffed by a minimum of 7 Operators and 1 Communication Center Shift Supervisor (CCSS) on four 24 hours platoons, dispatching WEMS and WFD. All Communication Operators are responsible to taking 9-1-1 calls, confirming the address and phone number of the emergency, obtaining all specific relevant information about the call, establishing through security questions if the scene is safe for field providers to attend and establishing the priority of the call (emergency or non-emergency). The 9-1-1 call taker then forwards the information to the EMS or Fire dispatchers (or both) who are responsible for assigning the call to the appropriate crews/units as well as monitor all vehicles in the field. Meanwhile, the call taker may stay on the line until help arrives on-scene and will give pre-arrival instructions to the patient. These include assisting/instructing the caller with performing Cardiopulmonary Resuscitation (CPR), or instructing appropriate chest pain patients to self-administer Aspirin (ASA). The WFPS also is responsible for the operations of the WRHA's Inter Facility Transport system. The booking and dispatching of ambulances and stretcher car services in the movement of patients between care facilities within the city's 6 hospitals and many clinics. This secondary dispatch center is staffed 24/7 with 3-4 communication operators who interchange with the 911 center on a rotational basis.