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111212-N-DR144-201 PACIFIC OCEAN (Dec. 12, 2011) A Sailor assigned to Repair Locker 5 checks the fit of his MCU-2P protective mask during a Chemical, Biological and Radiological (CBR) warfare drill on the mess decks aboard Nimitz-class aircraft carrier USS Carl Vinson (CVN 70). Carl Vinson and Carrier Air Wing (CVW) 17 are currently underway on a Western Pacific deployment.  (U.S. Navy photo by Mass Communication Specialist 2nd Class James R. Evans/Released)