The perspective of a continental defence is what would probably surface nowadays. It's kind of a declaration of the fact that North America is a single security space. We can't detach ourselves from each other. Something happening in the U.S. will affect us; something happening here will affect them.
In this continental defence perspective, as opposed to a national defence perspective, the current debate is in what domains it makes sense. It is evolving as a result of evolving capabilities. I'm reminded of the Battle of Britain which took place 75 years ago and we celebrated last year. In the years prior to the start of World War II, Great Britain discovered that the English Channel was no longer the longest tank ditch in the world, in the sense that for years, they were immune to invasion. Then air power started and we saw the Battle of Britain, and we know what history brought.
In many ways in North America, we are finding ourselves now facing threats, ballistic missiles, of course, but long range cruise missiles as well. This means that the Arctic, the Atlantic, and the Pacific may no longer be sufficient. They are still formidable barriers, but as far as a nation out there that would like to cause us harm, we are now facing something new from different domains, cyber being one of those, which the oceans do nothing in stopping that nefarious activity.
If NORAD did not exist, we wouldn't be having this debate now. You're right, maybe it would be too expensive. Maybe we couldn't afford it, but since we have it and can [Inaudible--Editor].