181012-N-HI376-1028 EAST CHINA SEA (Oct. 12, 2018) Sailors don emergency escape breathing devices as they prepare to evacuate a main engine room during engineering and damage control training aboard the amphibious transport dock ship USS Green Bay (LPD 20). Green Bay, part of the Wasp Amphibious Ready Group, with embarked 31st Marine Expeditionary Unit, is operating in the Indo-Pacific region to enhance interoperability with partners and serve as a ready-response for any type of contingency. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jeremy Graham/Released)