Question: The medical directives state that in order to call for a medical TOR one of the conditions is for the arrest to not be witnessed by EMS.

Does this just refer to EMS or does it include other emergency services, such as Nurses, Fire, Police or PSW? For example if PSW or Fire witnessed the arrest before EMS arrival and EMS arrived on scene and completed 4 analyzes and no shocks delivered, can EMS still call for a TOR because it was not witnessed by EMS?