170814-N-XC372-143 PACIFIC OCEAN (Aug. 14, 2017) The guided-missile destroyer USS Higgins (DDG 76) prepares to pull alongside the aircraft carrier USS Theodore Roosevelt (CVN 71) to conduct a refueling at sea. Theodore Roosevelt and Higgins 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 Anthony J. Rivera/Released)