The Navy rolled out designs for new versions of the Littoral Combat Ship on Thursday that feature increased firepower for self-defense and more armor to protect sensitive structures, following a review that was required by outgoing Defense Secretary Chuck Hagel to improve survivability of the vessels in hostile environments. The new plan calls for keeping both variants comprising the LCS program, one a mono-hull ship produced by Lockheed Martin [LMT] known as Freedom, and the second a trimaran version provided…