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Events such as the World Trade Center attacks, Hurricane Katrina, and the Minneapolis bridge collapse have affected society's perception of the risks affecting our lives. It has also led to the realization that a more systematic and holistic approach to risk management is needed, one that takes into consideration natural hazards, man made accidents, and intentional acts in a single context. This article discusses the early stage development of an all-hazards risk management (AHRM) approach designed to achieve this objective, taking hazardous materials transportation risk into consideration. Utilizing established assessment methods and data sources, relevant risks are expressed in monetary terms, creating a consistent basis from which one can identify those risks that warrant priority attention. An early stage application is presented, one involving an assessment of truck transportation of hazardous materials and earthquakes as two risks threatening several areas within the State of Tennessee, to illustrate the viability of implementing an AHRM approach. [ABSTRACT FROM AUTHOR]

Over the past decade, terrorism risk has become a prominent consideration in protecting the well-being of individuals and organizations. More recently, there has been interest in not only quantifying terrorism risk, but also placing it in the context of an all-hazards environment in which consideration is given to accidents and natural hazards, as well as intentional acts. This article discusses the development of a regional terrorism risk assessment model designed for this purpose. The approach taken is to model terrorism risk as a dependent variable, expressed in expected annual monetary terms, as a function of attributes of population concentration and critical infrastructure. This allows for an assessment of regional terrorism risk in and of itself, as well as in relation to man-made accident and natural hazard risks, so that mitigation resources can be allocated in an effective manner. The adopted methodology incorporates elements of two terrorism risk modeling approaches (event-based models and risk indicators), producing results that can be utilized at various jurisdictional levels. The validity, strengths, and limitations of the model are discussed in the context of a case study application within the United States., (© 2011 Society for Risk Analysis.)