180629-N-OM854-0017 BREMERTON, Wash. (June 29, 2018) Aviation Support Equipment Technician 3rd Class Jennifer Valenzuela applies an anti-corrosion treatment to an A/S 37A-3A tractor in the hangar bay aboard the Nimitz-class aircraft carrier USS John C. Stennis (CVN 74). The corrosive treatment protects the tractor screws from water and other corrosive elements. John C. Stennis is in port conducting routine training as it continues preparing for its next scheduled deployment. (U.S. Navy photo by Mass Communication Specialist 3rd Class Grant G. Grady/Released)