I could reinforce that too, having worked in the United States Pacific Command and having noted differences between the U.S. and Canada in how we respond to gun violence. In our headquarters we repeatedly exercised first-person shooter scenarios in which we responded to those kinds of things.
In Canada we pay less attention to those kinds of things and, frankly, we don't exercise it to the same degree we do in the U.S. I think were the threat to evolve further, that's the kind of attention we'd pay to it and then we would evolve in how we practise and prepare.