The MD80s I believe have lots of availability mid week, Saturdays and Sunday AMs. Lots of them always parked at DFW on the weekend. They can take some of the flying with the 738-800 and even a few of the 75L doing the rest. I don't see massive cancellations. It was only 24 a/c. The key days will be Mon, Thurs, Fridays and Sunday afternoons.