171003-N-UB406-007 ATLANTIC OCEAN (Oct. 3, 2017) Senior Chief Gas Turbine Systems Technician (Mechanical) Brady Carmack instructs Sailors aboard the Arleigh Burke-class guided-missile destroyer USS Mitscher (DDG 57) during engineer training drills, Oct. 3, 2017. Mitscher, homeported in Norfolk, Va., 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 Mass Communication Specialist Seaman Cameron M. Stoner/Released)