Chapter 1 Foreword by Senator Alan Cranston Chapter 2 Preface Chapter 3 Clouds of Secrecy: Introduction Chapter 4 Infecting the Enemy: Biological Warfare in the Past, and the Road to Testing Chapter 5 Living Near Gruinard Island Chapter 6 Fort Detrick's Mysteries Chapter 7 The Army's Germ Warfare Simulants: How Dangerous Are They? Chapter 8 Airborne in the U.S.A.: Open Air Vulnerability Tests in Minneapolis, St. Louis, and the New York City Subway System Chapter 9 Edward Nevin and the Spraying of San Francisco Chapter 10 The Trial Chapter 11 Terror or Error: The Yellow Rain Puzzle Chapter 12 Engineering Genes for Defense: Recombinant DNA Technology and Biological Warfare Chapter 13 Return to Testing: Field Experiments, the Dugway Issue, and Ethical Questions Chapter 14 Worries and Ambiguities Chapter 15 Appendices Chapter 16 Index