final hours the mission is not yet complete. so defining that is so critical. if it spills into a few extra days, what happens? what happens with the taliban? are there enough u.s. forces? the u.s. has also been relying on turkey for some additional support in securing the airport. they were clear today at the pentagon that once this mission ends, the u.s. is no longer responsible for the airport that has been the scene of air lifts so then who's hands does it fall into presumably, the taliban. presumably, it won't be called hamid karzai airport any longer either. so it is a delicate situation and defining the number of americans believed to be in country wanting to come back to the united states is critical to knowing is this mission close to being complete. chuck? >> and that's a number we have not been able to find, kelly o'donnell. thank you. in fact, andrea, let me just play. here's what president biden almost anticipating all of our