"Recent terrorist events in the United States underscore the importance of workplace evacuation planning. Consequently, OSHA [Occupational Safety & Health Administration] developed this Evacuation Planning Matrix to provide employers with planning considerations and on-line resources that may help employers reduce their vulnerability to a terrorist act or the impact of a terrorist release. Terrorist incidents are not emergencies that OSHA expects an employer to reasonably anticipate. However, if a terrorist release does occur in or near your workplace, an effective evacuation plan increases the likelihood that your employees will reach shelter safely."
Michigan State University Criminal Justice Resources Home Page: http://www.lib.msu.edu/harris23/crimjust/emerman.htm