I'm not sure you can answer this in the time I have left, but I have a follow-up question.
I get the impression from your comments that you took a lot of examples and illustrations from what the U.S. is doing and what they plan to do moving forward. How would you characterize Canada's preparedness to deal with issues of cyber-attacks on our transportation networks? Which ones would be the most susceptible to attack? Would it be airlines, marine or rail service traffic? How do we better protect against these cyber-attacks?