Huntington Ingalls Industries announces new executive appointments for Investor Relations and Internal Audit. HII appoint Dwayne Blake corporate vice president, investor relations, and Scott Stabler corporate vice president, internal audit, effective Jan. 1, 2013. Blake, formerly the corporate vice president, internal audit, is replacing Andy Green, who is leaving the corporate staff for a position at HII's Newport News Shipbuilding division (NNS). Blake's responsibilities will…