180602-M-RT059-0121 KLAIPEDA, Lithuania (June 2, 2018) Members of the Romanian 307th Naval Infantry Battalion stand in their sleeping quarters aboard the Harpers Ferry-class dock landing ship USS Oak Hill (LSD 51) during exercise Baltic Operations (BALTOPS) 2018 in Klaipeda, Lithuania, June 2, 2018. BALTOPS is the premier annual maritime-focused exercise in the Baltic region and one of the largest exercises in Northern Europe enhancing flexibility and interoperability among allied and partner nations. (U.S. Marine Corps photo by Staff Sgt. Dengrier M. Baez/Released)