As we noted, we have 292 buildings that are designated sites. It adds a level of complexity in what can be done to the building. It limits our ability to demolish. There's absolutely no doubt. We have old hangars, for example, heritage sites. They are part of Canadian heritage and they do matter. Our ability to use them is zero, and the ability to invest in them is very low.
I wouldn't say per se that there is a hindrance. There's no extra burden in how we use the individual building, but we have standards we need to follow as we update, as we refit, as we invest. The classic example is armouries; every town in this country has an armoury. They date back to World War I and World War II. We have to preserve the exterior. In many cases we have to use the same kinds of exterior finishes, the same kind of material. It adds to costs, absolutely, and we tend not to demolish those buildings because of their heritage nature. We maintain them. We have to continue their cost unless they're surplus to need, and then we look at whether a community would like to take them on.