A U.S. Air Force security forces raven and Reserve Airmen assigned to the 816th Expeditionary Airlift Squadron, maintain a security cordon around a U.S. Air Force C-17 Globemaster III aircraft in support of the Afghanistan evacuation at Hamid Karzai International Airport (HKIA), Afghanistan, Aug. 24, 2021. (U.S. Air Force photo by Master Sgt. Donald R. Allen)