I just want to clarify something.
I'll offer you something in return for your question, but Nav Canada is not responsible for designing noise abatement procedures. We look at the ones that are developed by airports, and sometimes those of airports along with airlines together, to see if they are feasible from an air traffic control point of view.
But what I can send to the committee is a sample of various noise abatement procedures in place at various airports in Canada, and then you can see what they look like and how they are constructed. But we don't actually do that ourselves and we are not an expert on that, and I don't pretend to be an expert.