The 451st Air Expeditionary Group was a provisional United States Air Force USAFCENT unit. It was assigned to Kandahar Airfield and is also the host unit at Kandahar. It reported to the 455th Air Expeditionary Wing at Bagram Air Base.

Ahmad Shah Baba International Airport, also referred to as Kandahar International Airport, and by some military officials as Kandahar Airfield, KAF), is located in the Daman District of Kandahar Province in Afghanistan, about 9 NM southeast from the city of Kandahar. It serves as the nation's second main international airport and as one of the largest main operating bases, capable of housing up to 250 aircraft of different sizes. The current head of the airport is Maulvi Fathullah Mansour.