200602-N-BC190-1059 PACIFIC OCEAN (June 2, 2020) Rear Adm. David Welch, commander of Carrier Strike Group 15, salutes rainbow side boys while departing the aircraft carrier USS Nimitz (CVN 68). Nimitz is underway conducting composite training unit exercise (COMPTUEX). COMPTUEX is an intensive exercise designed to fully integrate units of the carrier strike group, while testing a strike group's ability as a whole to carry out sustained combat operations from the sea. (U.S. Navy photo by Mass Communication Specialist 3rd Class Sarah Christoph/Released)