180225-N-PE636-045 ATLANTIC OCEAN (Feb. 25, 2018) Secretary of the Navy (SECNAV) Richard V. Spencer receives side-boy honors on the flight deck upon arriving for a visit aboard the aircraft carrier USS Harry S. Truman (CVN 75). Harry S. Truman is underway for composite training unit exercise (COMPTUEX), which evaluates the strike group's ability as a whole to carry out sustained combat operations from the sea - ultimately certifying the Harry S. Truman Carrier Strike Group for deployment. (U.S. Navy photo by Mass Communication Specialist 2nd Class Anthony Flynn/Released)