I can only speak to those areas where the RCMP is the police of jurisdiction.
I'm aware that, in some instances, there are arrangements that have been made based on the standard set by Transport Canada that the police have to have a certain response time to certain types of alarms. It's the same with instances of continuous presence, for instance, at pre-clearance for the United States. There are instances where the police of jurisdiction are required.
Maybe the airport authority could speak more to that as well.