150507-N-ZZ999-730 GDYNIA, Poland (May 7, 2015) U.S. Ambassador to Poland Stephen Mull arrives aboard the guided-missile destroyer USS Jason Dunham (DDG 109) during a ship visit in Gdynia, Poland. Jason Dunham is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo by Lt. Peter S. Pagano/Released)