airport. again, it happened about seven hours ago, and now we're hearing, slowly, power may be returning. the lights have come back on in at least one part of the airport, but all commercial flights into and out of atlanta are canceled for tonight. tom sater is here from the cnn weather center. tom, how is this impacting flights across the country? >> ana, we're a week away from christmas eve and volume is only going to increase throughout the week. flight explorer, flight tracker 24, flight aware. let's talk about the differences. first, i want to show you a typical image on flight explorer. and you can see the activity and what a major hub this is here in atlanta. look at the activity here. the inbound, the outbound flights, it's like a spirograph. now i'm going to show you what it looks like now. it was really something, about three hours ago. let's go to flight aware. and you'll be able to see a lot of dead space. i mean, there is a lot of open sky in this area. what we have noticed, though, which has been interesting, in and around the atlanta area, is