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110128-N-7981E-235 BAY OF BENGAL (Jan. 28, 2011)- Aviation Structural Mechanic Airman Davis Lettieri wears an MCU-2P  Chemical Biological Radiological (CBR) mask at a decontamination station in the hangar bay aboard the Nimitz-class aircraft carrier USS Carl Vinson (CVN 70) during a general quarters drill. Carl Vinson and Carrier Air Wing 17 are underway on a deployment to the U.S. 7th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 2nd Class James R. Evans / RELEASED)