AMNA NAWAZ: Four years ago this past Sunday,## the last American soldier walked up the ramp of# the last departing military flight out of Kabul,## ending nearly 20 years of the# American war in Afghanistan.

The U.S. also left thousands of Afghans behind# who had worked with the United States and## believed in the American-led war against# the Taliban.

Many of them are still left## behind after the Trump administration# suspended all relocation programs.

Nick Schifrin spoke with two men# still in Afghanistan about the fear## they live with today and the dark# memories from the Taliban takeover.

NICK SCHIFRIN: Four years ago, a# community forsaken.

Thousands of## Afghans flooded Kabul Airport, desperate to# flee.

And many, having worked with the U.S.,## begged American soldiers for a# chance to keep their freedom.

MAN: I have all documents to go to U.S. NICK SCHIFRIN: As the Taliban took# back Afghanistan and after two decades,## the United States withdrew.

"MOHAMMAD," Former Humanitarian Coordinator:# That was very, very bad scenario for us,## not only for my family, but all the# Afghans, especially those who worked with## international India and for the U.S. During# that time, we have to say we lost our hope.

NICK SCHIFRIN: This is a man we will call# Mohammad, who's still in Afghanistan and whose## identity we are concealing and voice we are# altering.

He was a humanitarian coordinator## for more than 20 years.

He worked with USAID,# the U.N. and others to promote women's rights,## expand education, and bring together community# leaders from across the country to build peace.

What were you trying to accomplish by# helping the U.S. and the U.N. in Afghanistan?

"MOHAMMAD": The United States tried to# develop or increase democracy in Afghanistan,## in human rights, especially rights for# women and children.

I tried to educate## people.

And that was my responsibility.

It# was a good chance for me to serve my people,## my community, especially in remote areas where# they had no access to anything, no education,## no health services, no roads and no water.

NICK SCHIFRIN: But Mohammad's help# for his homeland nearly cost him## his only son.

He was kidnapped by the# Taliban and tortured for nearly a month.

"MOHAMMAD": They said they would# need $400,000 to release my son,## which was not possible for me.

Finally,# they accepted $60,000.

I had to sell## everything.

I lost my house.

I sold# my car.

Even after I received my son,## they messaged me that you have no more# rights to work with U.N. international NGOs,## especially with U.S. projects.

Otherwise, you# will be killed or we will kill your family.

It's very bad memory that I have.

And my# wife, after many years, she's not mentally OK. NICK SCHIFRIN: The family is not OK.# Today, the threat they face is daily.## When the Taliban took over, they released his# son's torturers, who are now local commanders.

"MOHAMMAD": This is the fourth house which I# changed.

During the four years, when me and my son## go to the bazaar, or market, we just put on masks# and sunglasses to not be recognized by anyone.

NICK SCHIFRIN: Under Taliban rule,# life for Afghans who aided America## has become a living nightmare.

The Taliban# administer their vengeance through torture,## drowning this former member of the security# forces, shooting this former police chief.

But America's Afghan allies have# nowhere to go.

Soon after inauguration,## President Trump suspended the Refugee# Admissions Program.

And in May,## Secretary of Homeland Security Kristi Noem# rescinded Afghans' temporary protected status,## which allowed them to live in# the U.S. for up to 18 months.

She said Afghanistan's conditions -- quote# -- "do not meet the requirements for a TPS## designation," and that Afghanistan has had# an improved security situation.

In late July,## President Trump suggested he wanted to# take care of only some Afghan refugees.

QUESTION: What is America's debt to our Afghan# war allies that kept our veterans safe over there?## There's been some talk about sending a lot of them# back.

Would you let your administration do that?

DONALD TRUMP, President of the# United States: We know the good ones,## and we know the ones that maybe aren't s.. so good.

And we're going to take care of# those people, the ones that did a job.

"ABDUL," Former English Teacher: We were so# happy that he is the president of the United## States.

But he surprised everyone by what he# did, the executive orders, put on suspension.

NICK SCHIFRIN: A man we will call Abdul is a# former English teacher, including of girls.

He## worked with the U.S. Embassy and American Council# for five years before the Taliban takeover.

He'd been approved for a P-1 visa,# designated for at-risk refugees,## referred by U.S. government agencies and# NGOs.

He was just waiting for his medical## check in flight when President# Trump suspended the program.

We're changing your voice.

We're blurring your# face.

What's the risk that you face today?

"ABDUL": Two options, detain or kill.

If it's# known that I was a person who worked with the U.S.## Embassy and American Council, especially with the# people of America, there is no justice.

There is## no court.

They will just order their soldiers to# check their aim and just shoot you in your head.

I do not have a plan for now or for the future.# That is the situation at this time in Afghanistan.

NICK SCHIFRIN: An Afghanistan under the# Taliban is one of tyranny and tribulation.## Dissent is met with public execution.# Unemployment and inflation are high,## and women have been silenced, barred# from receiving an education or even## participating in almost all aspects of public# life.

Some of their homes are now their prisons.

"ABDUL": I no longer know what will be the# future of us, the future of my students,## who still didn't even complete their# education.

And these thoughts hit me## hard.

So, by the course of# time, even I feel depressed.

Why were we left behind?

What crime# did we commit?

We gave all of our## ability.

We gave everything we had.# And now we are living in limbo.

We## are living anonymously.

We are# hiding in a corner of our home.

NICK SCHIFRIN: Hiding and# hopeless.

Four years later,## American allies and many Afghans# have never felt more alone.

For the "PBS News Hour," I'm Nick Schifrin.