200608-N-NO901-0019 BALTIC SEA (June 8, 2020) The guided-missile frigate USS Donald Cook (DDG 75) operates in the Baltic Sea during BALTOPS 2020, June 8, 2020. BALTOPS is the premier annual maritime-focused exercise in the Baltic region, enhancing flexibility and interoperability among allied and partner nations. (U.S. Navy photo courtesy of the German Navy/Released)