150608-N-ZZ999-117 BALTIC SEA (June 8, 2015) Maritime forces from 17 nations are underway in formation for BALTOPS 2015. BALTOPS is an annually recurring multinational exercise designed to enhance flexibility and interoperability, as well as demonstrate resolve of allied and partner forces to defend the Baltic region. (U.S. Navy photo courtesy of the Royal Navy by LPhot Luron Wright/Crown Copyright/Released)