his tests of high-precision gravitational forces. His current research involves experimental work in gravitational physics, nuclear astrophysics, low-energy tests of fundamental symmetrics, and nuclear structure. Dr. Adelberger was awarded the Tom W. Bonner Prize in nuclear physics and the von Humboldt Senior Scientist Award. He served on the NRC Task Group on Gravity Probe B and on the Committee on Gravitational Physics. Dr. Adelberger was a member of the Nuclear Science Advisory Committee to the Department of Energy (DOE) and the National Science Foundation (NSF) and a member of the NSF Special Emphasis Panel on Nuclear Physics.

WILLIAM B. ADKINS is president of Adkins Strategies, LLC, a space and defense consulting firm in Washington, D.C. Prior to forming Adkins Strategies, Mr. Adkins spent 20 years in government service in various capacities within the national security and civil space arenas. Mr. Adkins was a staff director for the Subcommittee on Space and Aeronautics on the House Science Committee, where he led the subcommittee’s legislative and oversight activities of NASA and related space and aeronautics activities. Before joining the subcommittee, Mr. Adkins was a legislative assistant for Senator Spencer Abraham (R-Mich.). Before working on Capitol Hill, he worked at the National Reconnaissance Office and the Naval Research Laboratory, where he was involved in the development of space systems and advanced technology.

THOMAS APPELQUIST is a professor of physics at Yale University. His research has focused on the theory of elementary particles, including the strong interactions and electroweak unification. His most recent interests have dealt with universal extra dimensions and the origin of the quark and lepton masses. He chaired the NRC Board on Physics and Astronomy’s Physics Survey Overview Committee.

JAMES S. BARROWMAN is currently an independent consultant. He worked at NASA Goddard Space Flight Center for 22 years in program and project management. At GSFC, he was involved in managing the Attached Shuttle Payloads Project, the Attached Payloads and Explorers Mission project, the Explorers Program, the Extreme Ultraviolet Explorer Satellite, and the Hubble Space Telescope missions. During his tenure at GSFC, he served as deputy director of the Space Science Directorate. He is the recipient of the NASA Outstanding Leadership Medal and two NASA Exceptional Service Medals. Mr. Barrowman is a member of the American Institute of Aeronautics and Astronautics and past president of the National Association of Rocketry. He served on the NRC Committee on Principal-Investigator-Led Missions in the Space Sciences: Lessons Learned.

DAVID A. BEARDEN is the principal director for NASA programs at the Aerospace Corporation, where he provides technical direction for the staff supporting NASA and Jet Propulsion Laboratory on interplanetary and Earth science programs. These programs include the Mars Program, Space Interferometry Mission, Outer Planets/Solar Probe Mission, New Millennium Program, Discovery programs, and other space physics and science missions. Dr. Bearden’s expertise lies in the areas of project management, space systems architectural assessment, conceptual design and cost, and simulation and analysis of complex space systems. He joined the Aerospace Corporation in 1991 in the area of space concept analysis and design and later became a section manager in the Space Architecture Department.

MARK DEVLIN is a professor in the Department of Physics and Astronomy at the University of Pennsylvania. His research focuses on experimental cosmology at millimeter and submillimeter wavelengths. He designs and builds instrumentation and telescopes that are used in high-altitude balloons. He is currently involved in several projects for which he serves as principal investigator, including BLAST (Balloon-borne Large Aperture Submillimeter Telescope), ACT (Atacama Cosmology Telescope), Penn Array (a project to build a 90 GHz receiver for the National Radio Astronomy Observatory’s 100 meter Green Bank Telescope), and PAPPA (Primordial Anisotropy Polarization Pathfinder Array).

JOSEPH FULLER, JR., is the founder and president of Futron Corporation, a decision-support consulting firm. The company designs innovative business and technical decision-support solutions to address some of the most challenging technology problems in the aerospace, defense, and transportation industries. Mr. Fuller began his

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