was employed by the U.S. Environmental Protection Agency (EPA) for 28 y (1973 to 2001) and at the time of his retirement in 2001 he was a Senior Scientist and Special Assistant to the Associate Director for Health, National Health and Environmental Effects Research Laboratory in Research Triangle Park, North Carolina. He was Director of the EPA radiofrequency (RF) biological effects research program in the early 1980s and is principal editor of the 1984 EPA report entitled Biological Effects of Radiofrequency Radiation, a comprehensive review of the world’s literature on this subject. He was leader of the EPA team who reviewed the proposed regulations that led to the 1996 Federal Communications Commission regulations on RF exposure. He has served on technical review panels for the Harvard Center for Risk Analysis, Food and Drug Administration (FDA), National Institute on Occupational Safety and Health, and U.S. Navy; served on the World Health Organization committee that developed the RF Research Agenda; reviewed a number of RF systems/facilities including the U.S. National Weather Service radar system and PAVE Phased Array Warning System. He was a member of the NCRP (1983 to 1989) and the FDA Technical Electronics Products Radiation Safety Committee (1996 to 1998). He is a charter member of the Bioelectromagnetics Society and has served on the Board of Directors. After retiring from EPA, he worked at Motorola until 2009 on the Electromagnetic Energy team. As a member of Subcommittee 4, Institute of Electrical and Electronics Engineers (IEEE) International Committee on Electromagnetic Safety, he helped develop the 2005 revision of the “IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz.” He is currently self-employed part-time as a consultant on RF bioelectromagnetics issues.