- City and NationalSecurity Correspondent,

Caitlin Burke, has more.

- According to the Pentagon,

coordination with theTaliban has allowed the U.S.

to widen the perimeteraround Kabul Airport,

providing additional securityto those trying to evacuate.

This comes as President Biden has said

that U.S. forces willremain in Afghanistan,

until every American who wants to leave,

has gotten out.

- There's discussions going on among us

and the military about extending.

Our hope is we will not have to extend.

But there're gonna be discussions,

I suspect, on how far alongwe are in the process.

- [Caitlin] A Taliban spokesman says

it would be a mistake for U.S. forces

to remain beyond the agreed upon deadline.

- President Biden announcedthat until 31st of August,

they would withdraw allthere military forces.

So if they extend it,

that means they are extending occupation.

If they are intent oncontinuing the occupation,

so it will provoke a reaction.

- [Caitlin] The Pentagon maintains

that the focus is still to be out

by the end of the month.

- The goal is to get as many people out,

as fast as possible.

- [Caitlin] The U.S. has evacuated

and facilitated the evacuation

of approximately 37,000people since August 14th.

With nearly 11,000 peoplegetting out Sunday.

Biden bolstered resources by activating

the Civil Reserve AirFleet over the weekend.

The little used program created

after World War II,

increases our air lift capacity

by enlisting commercial airlines for help.

- These Civil Reserves flights will

be helping facilitate the safe movement

of people from staging locations

and transit centerslike Qatar and Germany,

to the United States,

or to a third country.

None of them will be landing in Kabul.

- [Caitlin] The situationin Kabul remains dangerous.

Biden warning of possible attacks

on the U.S. operation.

- [President Biden] But every day we

have troops on the ground.

These troops, and innocentcivilians at the airport,

face the risk of attackfrom Isis-K from a distance.

Even though we're moving backthe perimeter significantly.

- As a defense, aircraft arereleasing flares to distract

any heat seeking missiles that may

be targeting planes carrying evacuees.

National Security Advisor, Jake Sullivan,

says the U.S. isconsulting with the Taliban

on every aspect of what'shappening in Kabul right now.

He says they've developed a way

to get Americans who want toleave safely to the airport,

and as far as our Afghan allies go,

he says the U.S. will continue to work

to get them out of Afghanistan,

even after our forces have left.

Caitlin Burke, CBN News.