In a planned leadership transition, James D. Taiclet became president of Lockheed Martin Corporation. He succeeds Marillyn A. Hewson, who has served as chairman, president since 2014 and president and CEO since 2013. Taiclet's became chairman, president and CEO in 2004. Taiclet will continue to serve as a member of the corporation's board, which he joined in 2018. Hewson will become executive chairman of the board and provide ongoing support for the leadership transition. Several other executive leadership appointments became effective June 15, 2020 as part of the transition. Frank A. St. John became chief operating officer. In this newly created role, he is responsible for the strategic, operational and financial performance of all the corporation's lines of business. Most recently, he served as executive vice president of Lockheed Martin's Rotary and Mission Systems (RMS) business area and prior to that as executive vice president of Lockheed Martin's Missiles and Fire Control (MFC) business area. Stephanie C. Hill succeeded St. John as executive vice president of RMS. Most recently Hill served as senior vice president, Enterprise Business Transformation, where she led the corporation's Digital Transformation and Enterprise Information Technology teams. Yvonne O. Hodge succeeded Hill as senior vice president, Enterprise Business Transformation. Previously Hodge was vice president of Business Innovation, Transformation, and Enterprise Excellence for the corporation's Space business area.