Thank you.
In terms of interoperability, which is a question that comes up a fair amount, I'm not sure, to be honest with you, whether the interoperability of the F-35 is with only other F-35s or whether the interoperability of the F-35 is with all other aircraft, if you know what my question is. Would the F-35s the U.K. has, for example, be interoperable with the Eurofighter? Is that an issue? Is that something you can answer?