Explains fundamentals of risk assessment and presents examples of risk/uncertainty analyses from a range of applications, emphasizing value as the focus of risk assessment. Discusses how to make decisions using each risk process or model and the insights each model can provide. Presentation of each model includes computer code that encapsulates its logic, and directions on how to apply the model to other types of problems. Models covered include a terrorism risk model, opportunity risk model, and production sharing agreement risk model. Koller works in risk assessment and risk management at BP Amoco Corporation.