we must take it serious. i think right now they have some capabilities to make challenges in some areas. reporter: today, a lone taliban fighter stood among the belongings of the victims of the attack at abbey gate, now closed, along with the main road to the airport. still, desperate afghans returned, hoping to get a seat on one of the last evacuation planes out. but with most european flights coming to an end today, and u.s. flights stopping soon, the emergency exit is quickly slamming shut. a day ago, they were standing in line hoping to escape. now their loved ones are praying they find peace. the remaining u.s. forces will begin to shift focus to their own withdrawal by august 31, tony. in the meantime, white house press secretary jen psaki said there are approximately 500 u.s. citizens they re currently working with who want to leave. dokoupil: charlie, thank you very much.