days? >> clearly the risk level has increased as we continue to see the surge of the civilians towards the airport. look, you have this unholy trinity of isis and the taliban and al-qaeda that's in afghanistan. they are not necessarily on the same page. the u.s. troop numbers are drawing down, so the risk profile goes up in terms of their vulnerability. that's going to -- that makes it available to isis-k. but this is a nonpermissible, nonevacuation operation. it could either be per missive or nonpermissive. it could escalate if isis-k decides to do that. but bear in mind, the united states has incredible capability, along with coalitions to make sure we could look beyond the borders of the airport to look down range into where some of these pockets might be existing right now that would be planning to do and to conduct these types of operations. so confident that the u.s. is very much aware of that. but this is an operation very