Choosing safety: an overview -- Safety, risk, and hazard concepts -- Probabilistic risk assessment (PRA) concepts and methods -- Procedures for making safety-related decisions -- Principles of risk communication within a project -- The blade-trade case study -- Choosing among space shuttle auxiliary power unit (APU) safety improvement strategies -- The decision to launch the Cassini spacecraft -- Mars micro-meteorology (micro-met) stations -- Choosing the best severe accident management strategy -- Choosing safety: the final analysis.