160319-N-DQ503-093 ATLANTIC OCEAN (March 19, 2016) – Gas Turbine Systems Technician 2rd Class David Hancock, from Palmdale, California, samples fuel on the aft missile deck aboard the guided-missile destroyer USS Roosevelt (DDG 80) during a replenishment-at-sea (RAS). Roosevelt is underway conducting Composite Training Unit Exercise (COMPTUEX) with the Dwight D. Eisenhower Carrier Strike Group in preparation for a future deployment. (U.S. Navy Photo by Mass Communication Specialist 3rd Class Taylor A. Elberg/Released)