I think there's quite a continuum with that word and what it means. I think in some cases, such as with the U.S., it could be much more about working together on joint threat assessments, for example, and harmonizing around admissibility issues, and so on.
In the Global Counter-Terrorism Forum, for example, which is a new forum of 30 different countries, the idea is to exchange information on best practices for countering violent extremism, those kinds of things. So it's a bit more of an information exchange. There are obviously lots of bilateral exchanges. The case of Israel was brought up for its having a very strong aviation security program—and, of course, we'd want to talk to them and learn from them.
So it really depends on the issue, from loose engagement to very strong, I would say.