180329-N-QE928-029 PACFIC OCEAN (March 29, 2018) Fire Controlman 3rd Class Caitlin Calkin monitors a close-in weapon system during a pre-action aim calibration fire aboard the aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is underway conducting routine training as it prepares for its next scheduled deployment. (U.S. Navy photo by Mass Communication Specialist Seaman Erika Kugler/Released)