A U.S. Air Force E-3 Sentry takes off during Operation Agile Spartan from Al Dhafra Air Base, United Arab Emirates, Dec. 18, 2021. Operation Agile Spartan is a demonstration of Agile Combat Employment core competencies in the U.S. Central Command area of responsibility. Paired with aircraft refueling and command and control capabilities, ACE expands the number of locations from which air forces can generate combat sorties. (U.S. Air Force photo by Master Sgt. Dan Heaton)