title: Portfolio analysis of layered security measures.
abstract: Layered defenses are necessary for protecting the public from terrorist attacks. Designing a system of such defensive measures requires consideration of the interaction of these countermeasures. In this article, we present an analysis of a layered security system within the lower Manhattan area. It shows how portfolios of security measures can be evaluated through portfolio decision analysis. Consideration is given to the total benefits and costs of the system. Portfolio diagrams are created that help communicate alternatives among stakeholders who have differing views on the tradeoffs between security and economic activity.
authors.affiliation: Pacific Northwest National Laboratory, Richland, WA, USA.
authors.forename: Samrat
authors.initials: S
authors.lastname: Chatterjee
authors.forename: Stephen C
authors.initials: SC
authors.lastname: Hora
authors.forename: Heather
authors.initials: H
authors.lastname: Rosoff
mesh_terms: D003657:Decision Making; D004189:Disaster Planning / Q000379:methods*; D007194:India; D007557:Israel; D007564:Japan; D008131:London; D018570:Risk Assessment; D012637:Security Measures; D013030:Spain; D023481:Terrorism / Q000191:economics*
keywords: Expert elicitation; homeland security; portfolio decision analysis; probabilistic risk assessment; systems analysis; terrorism risk