150615-N-LV331-004 WARSAW, Poland (June 15, 2015) Secretary of the Navy (SECNAV) Ray Mabus listens to the history of the Tomb of the Unknown Soldier while participating in a wreath-laying ceremony at the tomb. Mabus is visiting the region as part of a multinational trip to the U.S. European command area of responsibility to meet with military and civilian leaders and Sailors and Marines. (U.S. Navy photo by Mass Communication Specialist 2nd Class Armando Gonzales/Released)