I mentioned that system was put in place as a result of a threat as perceived in the late 1970s. There are some capability challenges out there we can mitigate operationally, but from a capability point of view, we have to look at something else. With respect to sustainability of the system, it is supposed to last until 2025. At that point, in order to replace it, I'll have to refer to the commander of RCF, who's in Canada and who is the one who represent NORAD's requirements. When we talk about complicated systems like this, they don't fall off the earth at a certain point. There is a graceful degradation. We can plan to replace equipment in time, and we're starting the work now to replace it, but absolutely, there's going to be a requirement to take a look at new things closing into 2025.
On April 19th, 2016. See this statement in context.