Two Polish air force F-16 Fighting Falcons break away after refueling from a KC-135R Stratotanker during BALTOPS over Latvia, June 14, 2017. The exercise is designed to enhance flexibility and interoperability, to strengthen combined response capabilities, as well as demonstrate resolve among Allied and Partner Nations' forces to ensure stability in, and if necessary defend, the Baltic Sea region. (U.S. Air Force photo by Staff Sgt. Jonathan Snyder)