 And in Britain, it's impacting the country's hospital system and the medical system for booking of things like doctor's appointments. So, Dan, when it comes to the airlines, is there a safety issue here? There shouldn't be. The planes that are in the air will continue to fly to their destination. They're in contact with air traffic controllers. But those that were scheduled or are somewhere at the airport now, if you're going to the airport now, there's going to be a ripple effect. The airlines are going to have to rebook a lot of people today and reschedule a lot of flights.