Exposure to government consulting while Ph.D. student at Stanford; JASON membership as outgrowth of university work with Marvin Goldberger. Primary JASON work on ABM defense; first summer study at Berkeley, 1962; other projects include Cape Cod, Woods Hole, and Santa Barbara studies. Impact of personal philosophy on choice of study topics. Broader involvement in Advanced Research Project Agency (ARPA) and Arms Control and Development Agency (ACDA) project on test ban issues. JASON involvement in Viet Nam war issues; disillusionment leading to resignation; broader questions of Institute for Defense Analysis (IDA) independence.