170623-N-YL257-172 MEDITERRANEAN SEA (June 23, 2017) Sailors participate in a swim call in the waters beside the aircraft carrier USS George H.W. Bush (CVN 77). George H.W. Bush, part of the George H.W. Bush Carrier Strike Group, is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe and Africa. (U.S. Navy photo by Mass Communication Specialist 2nd Class Christopher Gaines/Released)