170404-N-FO714-115 PACIFIC OCEAN (April 4, 2017) Gunner's Mate 2nd Class Brian Martin, from Marietta, Ga., fires a .50-caliber machine gun during a live-fire exercise aboard the Arleigh Burke-class guided-missile destroyer USS Kidd (DDG 100) while underway conducting a composite training unit exercise (COMPTUEX) with the Nimitz Carrier Strike Group in preparation for an upcoming deployment. COMPTUEX tests the mission readiness of the strike group's assets through simulated real-world scenarios and their ability to perform as an integrated unit. (U.S. Navy photo by Mass Communication Specialist 3rd Class Deanna C. Gonzales/Released)