Age: 66

Committee Memberships: Audit, SH&E (Chair)

Director since: 1994

Term of Office Expires: 2012

Business Experience:

Dr. Thomas has served as a Trustee of Noblis, a nonprofit science, technology and strategy organization, since October 2008 and previously served as President and Chief Executive Officer from 1996 until her retirement in 2007 and as a consultant from October 2007 until October 2008. Prior to Noblis, Dr. Thomas held several executive positions, including Senior Vice President and General Manager, Vice President and Technical Director, at The MITRE Corporation, a not-for-profit organization that provides systems engineering, risk management, research and development, and information technology support to government agencies. Dr. Thomas is a member of the Board of Directors of the Northern Virginia Technology Council, a membership association for the technology community in Northern Virginia; Mueller Water Products, Inc., a manufacturer and marketer of infrastructure and flow control products for use in water distribution networks and treatment facilities; and INOVA Health System, a not-for-profit health care system. She also serves as a member of the Homeland Security Advisory Council to the Secretary of Homeland Security, a Trustee of the Washington Mutual Investors Fund and as a member of the Council on Foreign Relations. She previously served as Vice Chair of the Board of Trustees of George Washington University.