191105-N-DE019-0018 BREMERTON, Wash., (Nov. 5, 2019) Sgt. Sharlene John, from New York, checks the vitals of Cmdr. Andrew Stiles, from Wichita, Kan., during a blood drive aboard the aircraft carrier USS Nimitz (CVN 68). Nimitz is currently in port preparing for future operations. (U.S. Navy photo by Mass Communication Specialist Seaman Edwin Salvatierra/Released)