Thank you very much, Mr. Chair, and through you to the witnesses, thank you for being here today.
My question is based on fiscal responsibility and how we exercise it. I believe Professor Charron mentioned the rusting out of the north warning system. How do we begin to replace infrastructure or do things...? The infrastructure is becoming obsolete. My concentration would be on whether satellites, unmanned aircraft, are a more economical way than building these radar sites across North America, such as the old early warning radar systems, in that satellites look down. We know the technology in satellites is such that they can almost—and I think in some cases can—read licence plates on cars.
I'd like both of you to comment specifically on whether satellites and unmanned aircraft are a more economical way to defend North America from an air threat, or perhaps even a maritime one, because we know there are different platforms that threats can take place from.
Also, if you wouldn't mind, could you comment on the 1967 Outer Space Treaty, which you mentioned in some of literature you've referred to, and how it can relate to what I've just asked?
We could perhaps start with Professor Fergusson and move on to Professor Charron in response to that question.