I could elaborate on this.
Generally, the Canada Border Services Agency employees and their American counterparts work very well together.
There's no question that there is a very close relationship. That said, each organization is responsible under the Preclearance Act for the training of each of their employees. There's no question that in these pre-clearance environments—and on this I may ask Tina to comment—there's extensive back and forth and collaboration.
In order to provide the kind of response you'd be looking for, I think we'd need more precision on exactly what you mean in terms of the certain kinds of training.