A whiteboard is seen at a prison in Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A Taliban soldier stands in a cell at a prison in Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Assadollah, a Taliban soldier and former prisoner, poses for a photo in a cell at a prison in Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Vahdat, a Taliban soldier and former prisoner, sits on a chair at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Military vehicles stand at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A U.S. army uniform lies among other objects at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A Taliban soldier enters a helicopter at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Eshagh, a Taliban soldier and former prisoner, poses for a photo at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Taliban soldiers stand in Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A view of Bagram Air Base is pictured in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Graffiti is pictured on a cell wall in a prison at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A whiteboard is pictured at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A Taliban soldier walks in Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A view of a sitting area is pictured at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Vahdat, a Taliban soldier and former prisoner, sits in a military helicopter at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A view of a cell at a prison in Bagram Air Base is pictured in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Vahdat, a Taliban soldier and former prisoner, stands next to exercise equipment at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A man walks through the corridor of a prison at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Seifatollah and Vasighollah, Taliban soldiers, pose for a photo in a cell at a prison in Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Objects lie on the floor at Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A view of Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

A basketball backboard ?is pictured at Bagram air base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS

Taliban soldiers stand in Bagram Air Base in Parwan, Afghanistan, September 23, 2021. Picture taken September 23, 2021. WANA (West Asia News Agency) via REUTERS