190615-M-ZL739-0026 PALANGA, Lithuania (June 15, 2019) Several allied NATO nations participate in distinguished visitor day during exercise Baltic Operations (BALTOPS) 2019. BALTOPS is the premier annual maritime-focused exercise in the Baltic Region, marking the 47th year of one of the largest exercises in Northern Europe enhancing flexibility and interoperability among allied and partner nations. (U.S. Marine Corps photo by Lance Cpl. Nello Miele/Released)