190124-N-GY475-0029 NORFOLK (Jan. 24, 2019) Aviation Ordnanceman Airman Austin Otto, right, and Master-at-Arms 3rd Class Brady Williams participate in a simulated active shooter drill as part of antiterrorism training aboard the Nimitz-class aircraft carrier USS Harry S. Truman (CVN 75). Harry S. Truman is moored at Naval Station Norfolk conducting targeted maintenance and training, and remains operational ready. (U.S. Navy photo by Mass Communication Specialist 3rd Joseph A.D. Phillips/Released)