William F. Ballhaus, Jr. has served as a Director of the Company since May 2010. From 2000 to 2007, Dr. Ballhaus, now retired, served as President and then also as Chief Executive Officer of Aerospace Corporation, an organization dedicated to the application of science and technology to the solution of critical issues in the nation's space program. Between 1990 and 2000, Dr. Ballhaus' career included positions within the aerospace industry, including Corporate Vice President, Engineering and Technology for Lockheed Martin Corporation and President, Aero and Naval Systems and President, Civil Space & Communications, both for Martin Marietta. Between 1971 and 1989, Dr. Ballhaus worked for the National Aeronautics and Space Administration (NASA), including as Director of its Ames Research Center. Dr. Ballhaus, who has published more than 40 papers on computational aerodynamics, obtained a Ph.D. in Engineering in 1971 and a Bachelor of Science and Master of Science in mechanical engineering in 1967 and 1968, all from the University of California, Berkeley.