Lockheed Martin Corp., based in Bethesda, Md., has announced several leadership appointments and a realignment within its Electronic Systems business area. The actions are effective in early 2010. Marillyn A. Hewson, 55, will become executive vice president of the Electronic Systems business area. Currently president of Systems Integration-Owego, she succeeds Christopher E. Kubasik, who has been appointed to the position of president and chief operating officer. John T. Lucas, 49, will become senior vice president of human resources, succeeding Kenneth J. Disken, who is retiring following a 40-year career. William L. Graham, 59, will become deputy to Linda Gooden, Information Systems & Global Services’ executive vice president. Orlando P. Carvalho, 51, will become president of the Maritime Systems and Sensors (MS2) business, succeeding Fred P. Moosally, who previously announced his retirement after a long career with the US Navy and the defense industry. Carvalho is currently vice president and general manager of MS2’s operations in Moorestown, N.J. Regarding the business area, effective Jan. 1, 2010, the ground vehicle line of business, which includes the Joint Light Tactical Vehicle program, will be realigned from Systems Integration-Owego to Missiles and Fire Control, and the balance of Owego’s business will realign with MS2.