U.S. Air Force Aircrew Flight Equipment Airmen arrive at Yakima Air Terminal-McAllister Field, Washington to perform decontamination procedures on KC-135 Stratotanker aircrew and passengers during Exercise Mobility Guardian, Sept. 16, 2019. Exercise Mobility Guardian is Air Mobility Command's premier, large scale mobility exercise. Through robust and relevant training, Mobility Guardian improves the readiness and capabilities of Mobility Airmen to deliver rapid global mobility and builds a more lethal and ready Air Force. (U.S. Air Force photo by Tech. Sgt. Luther Mitchell)