From the perspective of that goal then, we can strive for perfection and recognize that probably there will always be a percentage of drugs in the institution. But I'll just put out the point—if you want to comment on it as well—that a small percentage of people bringing drugs into the institution or accessing and utilizing drugs has a huge impact on the larger percentage of those who want to take programs on positive behavioural change.
We have heard a bit of testimony about false positives in the ion scanner and some testimony about false positives with dogs' recognition of drugs. Could you maybe speak to us a bit about the significance of having those things, while respecting that fact that they can create some false indications, and the importance from your perspective and experience of the appearance of non-tolerance of that?