160722-N-WI626-188 SANTA RITA, Guam (July 22, 2016) Capt. David Schappert, Commander, Submarine Squadron 15, center, and Cmdr. Brian Turney, Commanding Officer, left, explain what happens during the firing of a water slug to Under Secretary of the Navy Janine Davidson, left, during a tour aboard Los Angeles-class attack submarine USS Chicago (SSN 721). Chicago is one of four submarines assigned to Commander, Submarine Squadron 15 and forward-deployed out of Polaris Point, Guam, also homeport to the Navy's only two submarine tenders. ( Navy photo by Lieutenant Lauren Spaziano/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 15, 721, chicago, commander, comsubron, guam, navy, point, polaris, secretary, squadron, ssn, submarine, subron, unsecnav, uss