High Arctic.
Non-Canadian nation intrudes on territory or seas claimed by the Government of Canada.
Courses of Action:
1. Do nothing.
2. Send Government envoy (Diplomat, Constable or Commissioned Officer) to site of incursion by sea, ice or air, and inform the perceived intruder that continued presence is not acceptable and will be construed as an act of war.
3. Skip the frivolities and air mail a package of high explosives to remove the incursive parties.
If CoA 2 were chosen, the most likely Canadian response in my opinion, the incursive party could respond in one of three ways:
1. Acquiesce and leave
2. Do nothing and stay
3. Skip the frivolities and air mail a package of high explosive to remove the complaining parties.
CoA's 3 work best if the parties doing the mailing have bigger warehouses than the other guy, have deeper pockets to buy new stuff, and/or have more powerful friends.
In no instance does it matter if the Government Envoy's transport is an RCAF aircraft, an Army Bv206 or a ship manned by the RCMP, the CCG or the RCN. In all instances the Government is conducting an Advance to Contact and should be ready to React to Effective Enemy Fire.
In no circumstances would it be reasonable to send an envoy into such a situation without appropriate fire support available. That support would be necessary regardless if the AOPS were being sailed, or just commanded, by the RCMP, the CCG or the RCN. In all cases the most likely, and I suggest, the most effective, the most rapid and most flexible, method of providing that support is through the RCAF which can respond in hours, hover for hours and react in minutes. Meanwhile any vessel is going to take days, if not weeks to get to the site of the incursion (by which time many inter-governmental text messages will have been sent) and it will takes weeks if not months for a supporting vessel to arrive (by which time everyone is frozen in place until the sun comes over the horizon again).
Constabulary duties to be done, to be done. A policeman's lot is not a happy one.