Leading up to the decisions, we were in contact with our international colleagues around actions that were being considered as well. That included colleagues within the European Union and the U.K. as well as the United States. We were also looking at potential language that may or may not be used to implement those bans. We continue, even in the case of the revisions to the NOTAM that we made late last week, to be in contact with our colleagues.
For the most part, we try to streamline it as best we can—also keeping in mind our own sovereign decision-making—for aircrews so that they're aware. If there's a potential to align with international partners, we do so. You see that in the work we do through our conflict zone information office as well, trying to streamline the warnings that we have in and around Ukraine and the 200 nautical miles around those borders.