BETHESDA, Md., Jan. 24, 2013 /PRNewswire/ -- Lockheed Martin Corporation (NYSE: LMT) announced that its board of directors has approved the appointment of Rick F. Ambrose, 54, to executive vice president (EVP) of its Space Systems business, and Sondra L. Barbour, 50, to EVP of its Information Systems & Global Solutions (IS&GS) business. The appointments are effective April 1, and follow announcements that Joanne Maguire, 58, EVP, Space Systems, and Linda Gooden, 59, EVP, IS&GS, will retire. (Photo: http://photos.prnewswire.com/prnh/20130124/PH47590-a ) (Photo: http://photos.prnewswire.com/prnh/20130124/PH47590-b ) "Joanne and Linda have made significant contributions to Lockheed Martin and our industry over their exceptional careers," said Marillyn Hewson, chief executive officer and president. "Both are distinguished leaders whose vision, expertise and unwavering commitment to performance excellence have positioned Lockheed Martin for continued success. They leave strong legacies and we wish them the best in their retirements." Under Maguire's leadership, the Space Systems business area has delivered several major national security space systems, notably the Space Based Infrared System, and expanded our role in space exploration with programs like Orion and Juno. She was the first woman to receive the prestigious International von Karman Wings Award, presented by the California Institute of Technology. And last year, she received the National Defense Industrial Association's distinguished Peter B. Teets Space Division award. During Gooden's tenure, IS&GS has remained the top provider of information technology services to the U.S. government for 18 years and has expanded our government IT business into international markets. She was named Black Enterprise magazine's 2009 100 Most Powerful Executives in Corporate America, and was appointed by President Barack Obama to the National Security Telecommunications Advisory Committee in 2010. "Rick is a seasoned executive with more than 33 years of industry experience in roles of increasing responsibility, and a proven track record of understanding and delivering on our customers' expectations," said Hewson.