Berkshire Hathaway Inc.

Warren E. Buffett, who has been concerned about the threats from weapons of mass destruction for four decades, serves as an Advisor to NTI's Board of Directors. Mr. Buffett is Chairman of the Board and Chief Executive Officer of Berkshire Hathaway Inc., a holding company owning subsidiaries engaged in a number of diverse business activities and controlled by him since 1965. Berkshire Hathaway Inc.'s business activities include the underwriting of property and casualty insurance and a wide variety of manufacturing, retailing and service companies. Mr. Buffett started out as an investment salesman and securities analyst, and early in his career he created his own investment partnership. Mr. Buffett also serves as a Director of The Washington Post Company and is a life trustee of Grinnell College and The Urban Institute. Mr. Buffett attended the Woodrow Wilson High School in Washington, DC, the Wharton School of Business at University of Pennsylvania and in 1950 received his B.S. from the University of Nebraska. He earned his M.S. in Economics from Columbia University in 1951.

Charles T. Munger has been a director of the Company since January 1997. He is also Vice Chairman of the Board of Berkshire Hathaway Inc., Chairman of the Board of Directors of Daily Journal Corporation, and Chairman of the Board of Directors of Wesco Financial Corporation.

Charlotte Guyman is vice chair of the UW Medicine Board. She earned both bachelor's and M.B.A. degrees from the UW, was formerly general manager of MSN Internet sales and marketing for Microsoft, and has worked on MSNBC and several Microsoft consumer project lines. Her experience includes development of learning software for adults and children and the pioneering Internet application, Expedia. She has been general manager of Kids and Games software for Microsoft, as well as director of international marketing and director of consumer division marketing. She is a Director for the company Berkshire Hathaway.

Ronald L. Olson is a partner in the Los Angeles office of Munger, Tolles & Olson LLP. Mr. Olson has practiced law with the firm since 1968. Mr. Olson also is a director of Berkshire Hathaway, Edison International, City National Corporation, The Washington Post Company, and Western Asset Trusts. He serves as a director of several non-profits, including the RAND Corporation (formerly chair), the Mayo Clinic, the Council of Foreign Relations, Southern California Public Radio (formerly chair), and the California Institute of Technology. He was Chairman of the Board of Trustees of Claremont University Center and Graduate School from 1984-94. Mr. Olson’s practice involves a combination of litigation and corporate counseling. He counsels individual executives and boards of directors in a range of matters, including transaction and corporate governance issues. Throughout his career, Mr. Olson has been the lead partner in numerous high-profile matters where clients have looked to the firm for advice and representation. Mr. Olson also has represented AOL Time Warner in securities actions arising from the merger of AOL and Time Warner; Gemstar-TV Guide International, Inc. in shareholder class actions and derivative cases arising from financial restatements; and Mattel in a lawsuit over “Barbie Doll” rights. Mr. Olson received his B.S. degree from Drake University in 1963, his J.D. degree from the University of Michigan in 1966, and a Diploma in Law from Oxford University, England, in 1967, at which time he was the recipient of a Ford Foundation fellowship. In 1967, Mr. Olson was an attorney for the Civil Rights Division of the Department of Justice and in 1968 clerked for Chief Judge David L. Bazelon, United States Court of Appeals for the D.C. Circuit. Mr. Olson was formerly Chairman of the Standing Committee on Federal Judiciary (1991-92), Chairman of the Litigation Section (1981-82), and Chairman of the Alternative Dispute Resolution Committee (1976-86) of the American Bar Association, and was Vice President of the Board of Governors of the State Bar of California (1986-87). He is a fellow of the American College of Trial Lawyers. Mr. Olson has received a number of awards for public service and pro bono activities.

William (Bill) H. Gates is chairman of Microsoft Corporation, the worldwide leader in software, services and solutions that help people and businesses realize their full potential. On June 27, 2008, Gates transitioned out of a day-to-day role in the company to spend more time on his global health and education work at the Bill & Melinda Gates Foundation. Gates continues to serve as Microsoft’s chairman and as an advisor on key development projects. In June 2006, Ray Ozzie assumed Gates’ previous title as chief software architect and oversees technical architecture and product oversight responsibilities at Microsoft. Craig Mundie assumed the new title of chief research and strategy officer at Microsoft and is responsible for the company’s research and incubation efforts. Born on Oct. 28, 1955, Gates grew up in Seattle with his two sisters. Their father, William H. Gates II, is a Seattle attorney. Their late mother, Mary Gates, was a schoolteacher, University of Washington regent, and chairwoman of United Way International. Gates attended public elementary school and the private Lakeside School. There, he discovered his interest in software and began programming computers at age 13. In 1973, Gates entered Harvard University as a freshman, where he lived down the hall from Steve Ballmer, now Microsoft's chief executive officer. While at Harvard, Gates developed a version of the programming language BASIC for the first microcomputer - the MITS Altair. In his junior year, Gates left Harvard to devote his energies to Microsoft, a company he had begun in 1975 with his childhood friend Paul Allen. Guided by a belief that the computer would be a valuable tool on every office desktop and in every home, they began developing software for personal computers. Gates’ foresight and his vision for personal computing have been central to the success of Microsoft and the software industry. Under Gates’ leadership, Microsoft's mission has been to continually advance and improve software technology, and to make it easier, more cost-effective and more enjoyable for people to use computers. The company is committed to a long-term view, reflected in its industry-leading investment in research and development each year. In 1999, Gates wrote “Business @ the Speed of Thought”, a book that shows how computer technology can solve business problems in fundamentally new ways. The book was published in 25 languages and is available in more than 60 countries. “Business @ the Speed of Thought” has received wide critical acclaim, and was listed on the best-seller lists of the “New York Times”, “USA Today”, “The Wall Street Journal” and on Amazon.com. Gates' previous book, “The Road Ahead”, published in 1995, was at the top of the “New York Times“ bestseller list for seven weeks. Gates has donated the proceeds of both books to non-profit organizations that support the use of technology in education and skills development. In addition to his love of computers and software, Gates founded Corbis, which is developing one of the world's largest resources of visual information - a comprehensive digital archive of art and photography from public and private collections around the globe. He is also a member of the board of directors of Berkshire Hathaway Inc., which invests in companies engaged in diverse business activities. Philanthropy is very important to Gates. He and his wife, Melinda, started a foundation in 2000 to help reduce inequities in the United States and around the world. The Bill & Melinda Gates Foundation supports philanthropic initiatives in the areas of global health and learning, with the hope that in the 21st century, advances in these critical areas will be available for all people. To learn more about the foundation, visit www.gatesfoundation.org. Gates was married on Jan. 1, 1994, to Melinda French Gates. They have three children. Gates is an avid reader, and enjoys playing golf, tennis and bridge.