Okay. Thank you.
Switching over to talking about the modernization of NORAD, a couple of people have touched on it already. This is obviously not the first time there's been a discussion of modernizing NORAD. In fact, up until September 11, it's at least my understanding that all of the work NORAD was doing was looking at incoming threats, not within the borders. Things have changed quite a bit now, because NORAD is also monitoring what's happening within the borders of North America.
When we talk about modernizing NORAD and about the threats that are happening today, where do you see other potential threats, outside of missiles specifically, and what other areas of NORAD need to be modernized, essentially?