plane take off. nick payton walsh, you have been covering the terror threat to the airport as well. what effect should we expect on the evacuations going forward? >> reporter: yeah, i'm sure this will have a very chilling effect on the evacuation as we understand it in its sort of closing phases. the key thing from the pentagon spokesman kirby's tweets is outside karzai international airport. there is a clear line where the airport begins and where it ends. also, too, where the u.s. or nato-controlled part of it is and where it is not. we are talking about the areas we fear, crowded areas where many afghans are trying to get onto the base. there are areas to the south of that airport near the south civilian side which are controlled by the taliban, and their control does extend to some extent to the areas around the north and the east where a lot of the access gates are into