ght projects and continues investigations into basic mechanisms of proton and other radiation effects in emerging technologies. Dr. Marshall has chaired sessions and served on several committees for the NSREC, and he is a member of the IEEE and NPSS with over 80 published papers. Cheryl J. Marshall NASA Goddard Space Flight Center Cheryl J. Marshall received her B. S. degrees in Physics and Chemistry from Georgetown University in 1979, and her Ph.D. in Physics from the University of North Carolina at Chapel Hill in 1986. From 1986 until 1998, she worked as a research physicist for the Naval Research Laboratory, investigating basic mechanisms of radiation damage in microelectronic and optoelectronic technologies critical to satellite imaging and communications. She also served as Section Head of the Emerging Technologies Section in the Radiation Effects Branch at NRL, and provided flight program support. Dr. Marshall has served as the Defense Threat Reduction Agency's Program Area Reviewer for Single Event Effects, and chaired the 10th and 11 th Single Event Effects Symposia. Since 1998, Dr. Marshall has worked for the NASA Goddard Space Flight Center, evaluating radiation effects in emerging technologies and providing flight program support. She has participated in the IEEE NSREC on several committees and chaired sessions (including the Poster Session in 1998). She is a member of the IEEE and NPSS with over 80 published papers. William F. Heidergott Motorola, Inc., Satellite Communications Group William F. Heidergott received his B. S. in Electrical Engineering from the University of Arizona in 1974. Since joining Motorola, Inc., he has worked in the design and development of CMOS custom devices, application specific integrated circuits and standard products, and subsystem design and system development for numerous DoD, NASA, and commercial space programs. Mr. Heidergott's recent assignments include program engineering support in design for radiation environment compatibility and management of technology for comm