I would add that in addition to the hardware and software compatibility, which we often think of first, there are also the very important soft skills and exercises and forms that we tend to under-resource.
For example, when sequestration hit the U.S., the first thing we saw was that they couldn't participate in joint exercises anymore. That's a non-starter for interoperability; it really hurts us. We have to make sure that we're able to fund exercises.
Also consider things such as the Canadian Forces College, which brings together military and other government department representatives, especially at the NSP level, not only from within Canada but from outside. It's those connections that in the future can be really important conversation starters. We should not underestimate the importance of that NATO staff college system.