171013-N-UB406-065 ATLANTIC OCEAN (Oct. 13, 2017) Sailors use a thermal imager while combating a simulated fire during a general quarters drill aboard the Arleigh Burke-class guided-missile destroyer USS Mitscher (DDG 57), Oct. 13, 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)