Marines maneuver their AAV-P7/A1 assault amphibious vehicle to enter the well deck of the landing ship USS Oak Hill during Exercise Baltic Operations in the Baltic Sea, June 8, 2018. The Marines are assigned to the 26th Marine Expeditionary Unit. 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. Navy photo by Petty Officer 3rd Class Michael H. Lehman