Thank you.
My next question is for Mr. McKenna. You said earlier that the use of scanners was more or less a good idea. You added with regard to the Transportation Security Clearance Program that flight attendants and peace officers should have certificates. I am not entirely sure that I am in favour of this based on what happened in the United States in 2001 when the planes flew into the towers in New York. These were American airplane pilots who got on those planes. You will say that they were probably terrorists, and I agree with you, but had they been subjected to certain clearance checks, they might have been stopped.
Correct me if I am mistaken. I want to understand what happened in 2001.