111223-N-DR144-195 PACIFIC OCEAN (Dec. 23, 2011) Interior Communications Electrician Fireman Michael Liermann ascends an access trunk after completing maintenance on the 46MC announcing system in a weapons magazine 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).