—and I didn't have too many challenges at the time.
It's like any negotiation; there's a give and a take. Normally you're negotiating on behalf of your stakeholders, your carriers and your airports, and the other party is trying to maximize the benefits to its side. Obviously, as in any negotiation, coming to a compromise is the tricky part.
I don't know if there are any particular issues you can share, Marc, based on your longer experience.