Every holiday season someone invariably posts a picture of FlightRadar24 showing all the planes in the air, and every time they do I don't really get it because the sky always looks mobbed on that map as far as I can tell. So to me, what would be more noteworthy is not to see that blanket of yellow and orange planes -- or, in today's case, to see a giant hole in it. There are scarce few planes over New England, New York, and northern Pennsylvania right now. I haven't seen notice of specific airport closings, but just because you can still buy a Cinnabon doesn't mean you're flying anywhere...
