Northrop Grumman's plans to shutter its shipyard in Avondale, LA, in 2013 and move all Gulf Coast military shipbuilding to Mississippi would add $210 million to the price tag for completing the San Antonio-class amphibious assault ships LPD-23 and -25, the company's president told investors today. “It became clear that we will be facing excess capacity in our Gulf Coast operations,” Wes Bush, Northrop president and chief executive officer, said during the teleconference call. “Consolidating the shipyards will address the...