170907-N-UH661-016 PACIFIC OCEAN (Sept 7, 2017) Aviation Boatswain's Mate (Fuel) 3rd Class Christopher Tierce, from Victorville, California, samples a batch of fuel during a replenishment-at-sea aboard USS John C. Stennis (CVN 74). John C. Stennis is underway conducting carrier qualifications and training for future operations after completing flight deck certification. (U.S. Navy photo by Mass Communication Specialist 3rd Class Mike Pernick/Released)