Afghanistan evacuees wait to process at a camp theatre at an unknown location in the CENTCOM region, August 20, 2021. Airman 1st Class Kylie Barrow/U.S. Air Force/Handout via REUTERS

People embrace after disembarking a Lufthansa plane transporting evacuees from Kabul, Afghanistan, at the airport in Frankfurt, Germany August 18, 2021.

A bedroom is pictured at the residence building where evacuees from Kabul are expected to arrive, in Doberlug-Kirchhain, Germany, August 19, 2021.

People who were evacuated from Kabul, Afghanistan eat their first meal inside a tent after completing their coronavirus disease (COVID-19) testing at a camp in Doberlug-Kirchhain, Germany, August 20, 2021.

A U.S. Air Force loadmaster, assigned to the 816th Expeditionary Airlift Squadron, assists evacuees aboard a C-17 Globemaster III aircraft in support of Operation Allies Refuge at Hamid Karzai International Airport in Kabul, Afghanistan, August 20, 2021. Senior Airman Taylor Crul/U.S. Air Force/Handout via REUTERS

People who were evacuated from Kabul, Afghanistan walk towards a tent to undergo coronavirus disease (COVID-19) testing after arriving in Doberlug-Kirchhain, Germany, August 20, 2021. Image used for illustrative purpose.

Evacuees board an aircraft as the U.S. Department of Defense is committed to supporting the U.S. State Department in the departure of U.S. and allied civilian personnel from Afghanistan, and to evacuate Afghan allies safely, in this recent undated handout picture. Staff Sgt. Brandon Cribelar/U.S. Air Force /Handout via REUTERS

People walk away from a plane after arriving at RAF Brize Norton, in Oxfordshire, Britain, August 17, 2021.

U.S. Embassy personnel from Afghanistan board a Qatar Airways flight to Kuwait at Al Udeid Air Base, Qatar August 17, 2021. Picture taken August 17, 2021. U.S. Air Force/Senior Airman Noah Coger/Handout via REUTERS

Nepali men react upon their arrival after being evacuated from Afghanistan, at Tribhuvan International Airport, in Kathmandu, Nepal August 17, 2021.

People who have been evacuated from Afghanistan arrive at Roissy Charles-de-Gaulle airport after Taliban insurgents entered Afghanistan's capital Kabul, near Paris, France, August 18, 2021.

Baby carriages are seen inside the residence building where evacuees from Kabul are expected to arrive, in Doberlug-Kirchhain, Germany, August 19, 2021.

An evacuee holds up a peace sign after being manifested for a flight at Hamid Karzai International Airport, in Kabul, Afghanistan, August 19, 2021. Picture taken August 19, 2021. 1stLt. Mark Andries/U.S. Marine Corps/Handout via REUTERS

A U.S Airman with the Joint Task Force-Crisis Response high fives a child after helping reunite their family at Hamid Karzai International Airport, in Kabul, Afghanistan, August 20, 2021. Cpl. Davis Harris/U.S. Marine Corps/Handout via REUTERS

Evacuees from Afghanistan are seen through a glass window as they wait in a hall upon their arrival at Al Maktoum International Airport (DWC) in Dubai, United Arab Emirates, August 19, 2021.

Members of Indo-Tibetan Border Police (ITBP) who were evacuated from Kabul wave as the police truck carrying them leaves the Hindon Air Force Station in Ghaziabad, India, August 17, 2021.

A German family talks to members of the media upon arrival at Frankfurt Airport, Germany, August 18, 2021, after being evacuated from Kabul, Afghanistan.

An evacuee family is greeted following the arrival of Spanish and Afghan citizens at Torrejon airbase after evacuating from Kabul, in Torrejon de Ardoz, outside Madrid, August 19, 2021.

A woman who was evacuated from Kabul, Afghanistan, receives help from members of the German Red Cross as she walks up a flight of stairs to her housing unit at a camp in Doberlug-Kirchhain, Germany, August 20, 2021.

Qualified evacuees rest at a gym at an unknown location in the CENTCOM region, August 20, 2021. Airman 1st Class Kylie Barrow/U.S. Air Force/Handout via REUTERS

A Marine assigned to the 24th Marine Expeditionary Unit (MEU) processes an evacuee at Hamid Karzai International Airport, Kabul, Afghanistan, in this photo taken on August 15, 2021 and released by U.S. Navy on August 18, 2021. U.S NAVY/Central Command Public Affairs/Sgt. Isaiah Campbell/Handout via REUTERS

Spanish and Afghan citizens who were evacuated from Kabul arrive at Torrejon airbase in Torrejon de Ardoz, outside Madrid, August 19, 2021.

People who were evacuated from Kabul, Afghanistan prepare to alight from a bus after arriving in Doberlug-Kirchhain, Germany, August 20, 2021.

An evacuee reacts during coronavirus disease (COVID-19) tests conducted for Spanish and Afghan citizens who arrived at Torrejon airbase after evacuating from Kabul, in Torrejon de Ardoz, outside Madrid, August 19, 2021.

People who have been evacuated from Afghanistan arrive at Roissy Charles-de-Gaulle airport after Taliban insurgents entered Afghanistan's capital Kabul, in Paris, France, August 17, 2021.

A passenger gives a thumbs up after arriving on a flight from Afghanistan at RAF Brize Norton in Britain August 17, 2021. Picture taken August 17, 2021. Christopher Furlong/Pool via REUTERS

A girl evacuated from Afghanistan is seen through a glass window after arriving at Al Maktoum International Airport (DWC) in Dubai, United Arab Emirates, August 19, 2021.

Evacuee children wait for the next flight after being manifested at Hamid Karzai International Airport, in Kabul, Afghanistan, August 19, 2021. Picture taken August 19, 2021. 1stLt. Mark Andries/U.S. Marine Corps/Handout via REUTERS

People who were evacuated from Kabul, Afghanistan carry trays of food as they have their first meal at the camp in Doberlug-Kirchhain, Germany, August 20, 2021.