A good deal of work actually goes into the development of the estimates you're talking about.
Very briefly, the government receives, twice a year, from the prime contractors a very detailed list of all their requirements for the manufacture of the aircraft and a detailed list of all the Canadian companies that they believe can play a role. We sit down with the prime contractors twice a year to go through that list, discuss it, and validate it. In addition to that, we have site visits with many Canadian companies that are interested in the program or are part of the program to, in effect, do triangulation. We actually discuss with the Canadian firms their view of what the prime contractors are saying. All of that, which is actually a fairly significant amount of work, goes into the numbers you see in the documents.