151219-N-OR477-130 MOBILE, Ala. (Dec. 19, 2015) Susan A. Buffett, ship's sponsor for the littoral combat ship Pre-Commissioning Unit, Omaha (LCS 12), breaks a bottle across the ship's bow during a christening ceremony at Austal USA shipyard in Mobile, Ala. (U.S. Navy photo by Mass Communication Specialist 1st Class Michael C. Barton/Released)