150204-N-ZE250-074 GUANTANAMO BAY, Cuba (Feb.4, 2015) Senior Chief Sonar Technician Tom Chavez inspects a surface vessel torpedo tube on the aft missile deck of the Arleigh-Burke Class guided-missile destroyer USS Jason Dunham (DDG-109) while in port in Guantanamo Bay. Jason Dunham is underway in support of Operation Martillo, a joint operation with the U.S. Coast Guard and partner nations, within the 4th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Weston Jones/Released)