As you can appreciate, we wouldn't discuss specific capabilities or principles or how we manage our infrastructure.
What you're raising is a very acute thing we're aware of and are concerned about. Part of the motivation for the tracking of supply chain ingredients is to know that, because we would have providers of a service who would have technology and they may not know exactly where it has all come from, so we wouldn't know.
We have to imagine that it is not safe or secure, and we have to prepare ourselves for that—and we are. We are aware of these risks, but without that kind of knowledge, even if they were to attest that this is true, it might not be true. We can't afford to take those risks, so we plan as if it's not and we try to make it so.