191028-N-DQ752-0089 NAVAL BASE KITSAP-BREMERTON, Wash. (Oct. 28, 2019) Sailors aboard the aircraft carrier USS Nimitz (CVN 68) conduct a barricade drill on the flight deck. Nimitz is currently in port preparing for an underway. (U.S. Navy photo by Mass Communication Specialist 3rd Class Cheyenne Geletka/Released)