A U.S. Air Force F-16 Fighting Falcon assigned to the 480th Fighter Squadron takes off at Krzesiny Air Base, Poland, Sept. 12, 2017. Aviation Rotation 17-4 focuses on maintaining joint readiness while building interoperability capabilities. Through strengthened relationships and engagements with our Allies, the United States and NATO demonstrate their shared commitment to a peaceful, stable and secure Europe. (U.S. Air Force photo by Staff Sgt. Jonathan Snyder)