U.S. Air Force Airmen assigned to Aviano Air Base, Italy, assemble a tent in preparation for an Agile Combat Employment exercise at Cerklje ob Krki Air Base, Slovenia, Sept. 7, 2021. Exercises and deployments that utilize ACE concepts ensure the forces in Europe are ready to protect and defend partners, allies and U.S. interests at a moment’s notice, and generate lethal combat power should deterrence fail. (U.S. Air Force photo by Senior Airman Brooke Moeder)