A U.S. Air Force F-16 Fighting Falcon from the from the 480th Fighter Squadron arrives at the 32nd Tactical Air Base during an Agile Combat Employment exercise at Łask Air Base, Poland, April 19, 2021. ACE is a proactive and reactive operational scheme of maneuver executed within threat timelines to increase survivability while generating combat power. (U.S. Air Force photo by Tech. Sgt. Warren D. Spearman Jr.)