isn't the flight taking off? it seems they're really the victims of the trickle-down effect from north and south of us at this point. fredricka. >> kate baldwin at reagan national airport. you can find out more online and go to cnn.com/travel. click on airport delays and there you finds a status update on the busiest u.s. airports. the average delay time, what's causing the delays and whether there are cancellations as well. take a look at this. a rocket explodes just moments after take-off. the investigation into what caused it next. ♪