McDermott named David Dickson to succeed Stephen M. Johnson as the company’s president and CEO. He will initially serve as McDermott’s chief operating officer (COO), succeeding John T. McCormack, who is retiring after 10 years with the company. McCormack has held his current role since 2011. Dickson has about 23 years of offshore oilfield engineering and construction experience, including 11 years with Technip. Since September 2008, he has served as president of Technip USA.