191206-N-CU072-1242 PACIFIC OCEAN (Dec. 6, 2019) Damage Controlman 3rd Class Jashon Davis, from Pittsburg, Calif., uses a six-gas analyzer to test the atmosphere aboard the Arleigh Burke-class guided-missile destroyer USS Russell (DDG 59) during a damage control drill, Dec. 6, 2019. Russell is underway conducting routine training in the eastern Pacific Ocean. (U.S. Navy photo by Mass Communication Specialist 3rd Class Sean Lynch/Released)