I would say that you have to treat them as one component of several elements of consideration when visitors come into the institution. Based on the findings we've uncovered, there are clearly cases where the ion scan hits positively, there's an interview conducted as part of the TRA process, and from that we have individuals who admit in some cases to having used cocaine or another substance very recently. In other cases, they talk about narcotics that are in their car in the visitors' area, and as a result of a search of their car, which is on CSC premises, we are able to seize narcotics. We have other individuals who hit positively who talk about a prescription they have for OxyContin, for instance, in which case they're let in.
It's all part of a threat risk assessment process, but what we do know, for instance, is that when we seize fentanyl, not necessarily from visitors.... Fentanyl is obviously one of the most important priorities that we're working on right now. When we seize fentanyl from cells and test not necessarily the product itself, but items around the product, as per the recommendations of the manufacturer, and the tests are positive for fentanyl, we have had a number of cases where we've sent the narcotics to Health Canada, which has confirmed that it is in fact fentanyl. In other words, it's confirming the validity of the results that we're finding on our ion scans at the institutional level.
As long as we take the ion scan result from visitors at the front entrance for what it is, which is one element of the entire threat risk assessment process, we feel that it's a valuable tool. Again, it's not perfect, and there isn't one silver bullet that we have. It's just part of a bigger package.