Mr. Chair, maybe I'll take this one initially.
I can't speak to specifics in terms of exactly how frequently that happens. I would point to some recent remarks by the chief of the defence staff indicating that in the Arctic we don't see an immediate military threat. Obviously, the environment is changing dramatically both physically and geostrategically. We're monitoring developments in Russia and China vis-à-vis the Arctic really closely. We obviously need to be aware of what's happening in the north and be prepared to respond and defend.
I would say despite everything that's going on, with the world becoming more dangerous, we don't see an immediate threat and we're well prepared at the moment to monitor what's happening and respond as necessary.