Shipbuilder and defense technology company HII has been awarded an advanced planning contract to upgrade the Navy’s stealth destroyer Zumwalt (DDG-1000), which will include adding long range hypersonic missiles to the ship class. While there was feedback from other companies after the initial presolitication , the Navy decided to sole-source the modifications at HII. The planning period contract totals $10 million , according to the Defense Department. The Navy plans to outfit each of its three DDG-1000s with hypersonic strike...