PACIFIC OCEAN (Sept. 12, 2021) Gunner's Mate 3rd Class Daniel Campos, from Chico, Texas, prepares to fire a shot line from the foc'sle during an underway replenishment aboard the Arleigh Burke-class guided-missile destroyer USS Mustin (DDG 89), Sept. 12, 2021. Mustin is currently underway in the U.S. 4th Fleet area of responsibility conducting a series of exercises designed to increase interoperability and build capacity among partner nations. (U.S. Navy photo by Mass Communication Specialist 2nd Class James S. Hong)