170821-N-GP724-465 PACIFIC OCEAN (Aug. 21, 2017) The guided-missile destroyer USS Sampson (DDG 102) conducts a refueling-at-sea with the aircraft carrier USS Theodore Roosevelt (CVN 71). Theodore Roosevelt and Sampson are underway conducting a composite training unit exercise (COMPTUEX) with the Theodore Roosevelt Carrier Strike Group in preparation for an upcoming deployment. COMPTUEX tests a carrier strike group’s mission-readiness and ability to perform as an integrated unit through simulated real-world scenarios. (U.S. Navy photo by Mass Communication Specialist 3rd Class Alex Perlman/Released)