180330-N-IA905-1048 INDIAN OCEAN (March 30, 2018) Gunner’s Mate Seaman Sydney Callahan fires an M500 shot gun as Chief Gunner’s Mate Benoni Surge observes aboard the Arleigh Burke-class guided-missile destroyer USS Preble (DDG 88). Preble is underway with the Theodore Roosevelt Carrier Strike Group for a scheduled deployment in the U.S. 7th Fleet area of operations in support of maritime security operations and theater security cooperation efforts. (U.S. Navy photo by Mass Communication Specialist 3rd Class Morgan K. Nall/Released)