down the airport, we would have to have a significant presence. we would also, which we do have, we have tremendous ability to bring some phenomenal and very precise fire power from the air that would allow us to create conditions to make it that much more difficult for the taliban. but the question about indefinitely is a very long horizon. >> okay. so, admirable kirby confirmed to the brianna that the goal is to get the 30,000 people, not just americans, special immigration visas, people helping americans there for decades out of the country, up to 30,000 by august 31st. how possible is that if the only exit point is that airport in kabul? >> right. very, very tough. if that's the only point of departure becomes extremely difficult. it's a physics problem, we have to get aircraft in, all manner of aircraft and civilian