190912-N-FQ453-0011 NAVAL BASE KITSAP-BREMERTON, Wash. (Sep. 12, 2019) Logistics Specialist 3rd Class Miguel Guerrero takes the second class petty officer advancement exam aboard the aircraft carrier USS Nimitz (CVN 68). Nimitz is currently in port preparing for future operations. (U.S. Navy photo by Mass Communication Specialist Seaman Dalton Reidhead/Released)