170725-N-EN247-021 BREMERTON, Wash. (July 25, 2017) Seaman Rachel Cervantes, left, from Miami, and Seaman Hongjie Chen, from New York, replace batteries on inflatable life preservers in the forecastle of the aircraft carrier USS John C. Stennis (CVN 74). John C. Stennis is conducting a planned incremental availability at Puget Sound Naval Shipyard and Intermediate Maintenance Facility, undergoing scheduled maintenance and upgrades. (U.S. Navy photo by Mass Communication Specialist 3rd Class Alexander P. Akre/Released)