ABSTRACT
To stop a terrorist or physical attack on a building is very difcult. Any building or site can be breached or destroyed with enough planning, resources, and intention. However, the more secure the building or site and the better the building is designed to withstand an attack, the better the odds the building will not be attacked or suffer less damage if attacked. Terrorists often select targets that have some value as a target, such as an iconic commercial property, symbolic government building, or structure likely to inict signicant emotional or economic damage such as a shopping mall or major transportation hub (FEMA 426, 2003, pp. 1-21).
