Yes. Thank you.
Perhaps what I will do is explain how the plan worked, and then I would ask Mr. Séguin to touch on any of the actual budgetary issues you may have questions about.
I think it's very important for the committee and for everyone to understand how we come up with a number like $507.5 million. I appreciate the question.
Basically, in the G-8/G-20, there were 40 different sites that had to have some form of security. To do that, what we would do is take every single site and do a vulnerability risk assessment, a VRA. We would send a group of subject-matter experts out to the site to assess the site for all aspects of potential vulnerability. They would come back to us with a plan.
Let's say it was for this room. I'll use this as an example. They might come back and say that they are going to need a guard on each door and people on the rooftop of these buildings. They'll need to cover these windows. They may have to cover the windows with bulletproof glass.
Whatever the case may be, they put all of that together and come back with a plan. We take that plan, we assess it, and then we scrutinize it: do they really need five people over there or can we do it with one or two...? Then they justify that.