FEMA 459 Risk Management Series: Incremental Protection for Existing Commercial Buildings from Terrorist Attack  

This manual outlines an approach to incremental security enhancement in four types of existing commercial buildings: office buildings, retail buildings, multifamily apartment buildings, and hotel and motel buildings. It addresses both physical and operational enhancements that reduce building vulnerabilities to blasts and chemical, biological, and radiological attacks, within the constraints of the existing site conditions and building configurations.