C. Bruce Tarter is director emeritus of Lawrence Livermore National Laboratory, University of California, where his research interests include risk assessment, statistical mechanics, atomic physics, high-temperature equations of state and opacities, theoretical astrophysics, and applications to fusion and defense problems. He has served on numerous scientific boards and advisory committees, including the Laboratory Operations Board (Secretary of Energy Advisory Board), the Nuclear Energy Research Advisory Committee, and the Council on Foreign Relations. He received an S.B. in physics from the Massachusetts Institute of Technology and a Ph.D. in theoretical physics from Cornell University.

Robert H. Wertheim is a retired Rear Admiral, U.S. Navy. During his 35-year career in the Navy, Admiral Wertheim served as director of Navy Strategic Systems projects, responsible for the research, development, production, and operational support of the Navy’s submarine-launched ballistic missile systems—Polaris, Poseidon, and Trident. After retirement from the Navy in 1980, he spent 7 years as senior vice president of science and engineering at Lockheed Corporation, and since then has been an independent consultant. Admiral Wertheim has served on numerous scientific boards and advisory committees, including as a member of the NAS/NRC Committee on International Security and Arms Control (from 1989 to 1997). Today, he serves as a member of the Strategic Advisory Group of the U.S. Strategic Command, Joint Department of Defense/Department of Energy Advisory Committee on Nuclear Weapons Surety, and the University of California President’s National Security Panel. He is a member of the National Academy of Engineering. Admiral Wertheim received a B.S. from the U.S. Naval Academy and an M.S. from the Massachusetts Institute of Technology.


James E. Killian is a senior program officer at the National Research Council’s National Materials Advisory Board and a retired U.S. Navy captain. During his 26-year career in the Navy he served as the commanding officer of an aircraft carrier-based A-7 Corsair II squadron, commanding officer of the Navy’s Nuclear Weapons Evaluation Facility in Albuquerque, New Mexico, and program manager for the Navy’s Theater Nuclear Warfare Program (PMS-423) in Washington, D.C. He has a B.S. from the U.S. Naval Academy in Annapolis, Maryland, and an M.S. in aeronautical engineering from the Naval Postgraduate School in Monterey, California.

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