Outfront next, racing against time.

Six days before the deadline for U.S. troops to withdraw from Afghanistan, up to 1,500 Americans are still in Afghanistan.

This as warnings about an ISIS attack at the airport are growing.

And one state allowing vaccine skepticism to flourish, sending out recruitment flyers to nurses saying no need to be vaccinated

in order to work. Plus, he's a former NFL star backed by Trump, but a 2008 interview with

our Dr. Sanjay Gupta shows why some in the Republican Party are not sold on Herschel Walker.

Let's go out front.

Good evening, everyone. I'm Kate Baldwin. In for Aaron Burnett. Out front tonight, a race against

time, with just six days left before the deadline for U.S. forces to leave Afghanistan,

up to 1,500 Americans are still on the ground in Afghanistan. That's according to the Secretary

of State, Tony Blinken. But even as the administration offered for the first time any concrete numbers of Americans left to evacuate, Blinken said the U.S. does not know if all of them are looking to leave or are even still in Afghanistan.

These are dynamic calculations that we are working hour by hour to refine for accuracy.

Very Blinken also saying at least 4,500 Americans have been evacuated so far, more than 500 in the last day alone.

But those evacuations in Kabul growing more dangerous by the day, as CNN learns, an ISIS affiliate wants to create mayhem at the airport

and is planning to carry out multiple terror attacks there. That's according to a U.S. defense

official who also tells our Jim Shuto, the concerns increased because of, quote, a very specific

threat stream from ISIS-K. Adding to those concerns, members of ISIS K escaped two prisons

near Kabul, with one regional counterterrorism source saying, as many as several hundred members

of the group may have escaped, and you only need to listen to the words of President Biden and

his top advisors to see how serious they believe this ISIS threat is. These are credible threats.

We're operating in a hostile environment in a city and country, now controlled by the Taliban,

with the very real possibility of an ISIS-K attack. Every day we're on the ground is another day

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