U.S. Air Force Airmen assigned to the 435th Contingency Response Group support personnel and heavy equipment offload from a C-17 Globemaster III aircraft during exercise Swift Response 21 at Cheshnegirovo Airfield, Bulgaria, May 12, 2021. Exercises like Swift Response 21 enhance alliance security by maintaining NATO’s broad range of military capabilities to deter aggression and assure allies of NATO’s readiness to respond. (U.S. Air Force photo by Senior Airman John R. Wright)