190123-N-UI104-0398 PACIFIC OCEAN (Jan. 23, 2019) The Arleigh Burke-class guided-missile destroyer USS Preble (DDG 88) fires a Mark 38 25 mm machine gun system. Preble is deployed to the U.S 7th Fleet area of operations in support of security and stability in the Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 1st Class Bryan Niegel/Released)