This study explores the prevention of terrorism using three-dimensional (3D) analysis for the protection of populations in urban environments. Terrorism and crime prevention has become a popular exercise using the spatial tools available with geographic information systems (GISs). Thus far, most approaches have considered two-dimensional (2D) applications focusing primarily on hot spot identification or mapping trends in a geographic region. Sniper rifle fire modeling is examined in 3D modeling within a GIS environment. The primary methodology is tested using the concept of a viewshed and line of sight (LoS). To test the model, the Gerald R. Ford Funeral in Grand Rapids, Michigan, is used to examine the protection of individuals from sniper fire. It is found that using viewsheds has good potential to aid protection agents responsible for protecting individuals and populations.

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