 A lot of times you have to go in manually to reset the system. So that takes some time. And just take the airlines, for instance. At one point, about 10% of air traffic in the United States was delayed or canceled. And most of those systems are back online and were back online hours ago. But there's a ripple effect, and that takes days and hours just to keep up with that. And the transportation secretary here, Pete Buttigieg, said airlines would be on the hook for paying for passenger delays.