That's not completely accurate. Train cars that are coming from Mexico are scanned by U.S. CBP. They're generally in transit as they approach the Canadian border, so they have been scanned by U.S. CBP.
I agree with you that there may be very few instances where material could be onloaded in the United States, but that is the reason our intelligence officers get advance information to subject every railcar and every conveyance coming into Canada to a risk assessment. We perform targeting activities, and depending on the risk that's identified, we subject those cargo containers or railcars or whatever in your examples to certain types of intervention by BSOs.
If a very high risk is identified—let's say there's a shipment of cocaine in a particular cargo container—our officers generally will de-stuff the entire container, or we could subject it to some type of imaging process to see where the drugs are, and obviously that would help our officers determine where they should be looking. This is all risk-based.
I don't agree with the assertion that they are not scanned. They are scanned by U.S. CBP, and it has been agreed—sorry, I don't know the particular name of the MOU—that we operate on the principle that the United States has scanned it. It's in transit. It's coming to our border. We assess the risk. We get advance information, and we take appropriate action.