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151217-N-DA434-007 PHILIPPINE SEA (Dec. 17, 2015) Lt. Cmdr. Robert McDowell, center right, executive officer of the Los Angeles-class fast-attack submarine USS Topeka (SSN 754), provides a safety brief to Topeka family members and friends on the submarine’s mess deck, Dec. 17, prior to getting underway for a “tiger cruise.” Topeka hosted the tiger cruise to give friends and families the opportunity to understand what their submariners do and why being forward-ready is so important to national security. (U.S. Navy photo by Mass Communication Specialist Seaman Apprentice Alana Langdon/Released)