Perhaps I could just add that it's not simply an issue of cost. There is also an issue of what the U.S. expectations would be of Canada developing a comparable program. We did have some initial discussions with the U.S. government, and their expectation would be that, at a minimum, Canada would run the U.S. no-fly list, which from a legal perspective we felt would be quite difficult for us to do.
I think the other issue is also the time it would take to put in place a comparable program. The U.S. government has taken a number of years to develop the Secure Flight program—I would say it's been a minimum of five to seven years—and given the timing of the program in its implementation, there would have been insufficient time for Canada to proceed with the development of such a program, if a decision had been made to do so.