190125-N-MQ631-0012 NORFOLK(Jan. 25, 2019) Airman Apprentice Tyler Tafoya performs maintenance on a portable nitrogen cart in the hangar bay aboard the Nimitz-class aircraft carrier USS Harry S. Truman (CVN 75). Harry S. Truman is currently moored at Naval Station Norfolk conducting targeted maintenance and training, and remains operational ready. (U.S. Navy photo by Mass Communication Specialist 3rd Class Maxwell Higgins/Released)