161029-N-JO162-050 PACIFIC OCEAN (Oct. 29, 2016) Petty Officer 3rd Class Keith Vaivada, a native of Dingmansferry, Pa. practices tig welding in the ship's metal shop on board USS Nimitz (CVN 68). Nimitz is underway conducting routine operations in preparation for an upcoming 2017 deployment. (Navy photo by Seaman Kenneth J. Blair/Released)