171122-N-XU691-009 PACIFIC OCEAN (Nov. 22, 2017) Aviation Structural Mechanic (Equipment) 2nd Class Toby Rose removes the on board oxygen generating system concentrator from an E-2D Hawkeye early warning and attack aircraft assigned to the “Bluetails�? of Carrier Airborne Early Warning Squadron (VAW) 121 in the hangar bay of the aircraft carrier USS Nimitz (CVN 68). The ship and its carrier strike group is on a deployment to the western Pacific. The U.S. Navy has patrolled the Indo-Asia-Pacific region routinely for more than 70 years promoting peace and security. (U.S. Navy photo by Mass Communication Specialist Seaman David Claypool/Released)