Abstract: Information technologies and other critical infrastructures are interconnected in ways that can lead to vulnerabilities in the ability of these infrastructures to perform during natural disasters and acts of terrorism either to reduce adverse consequences or provide needed emergency response services. This research applies and adapts a number of indicators of infrastructure interdependency based on the authors' earlier research to determine where weak points and strengths occur in the interconnections between infrastructure technology and other infrastructure support services such as electric power and transportation, and where weak points create vulnerability that can be improved for more effective response in emergencies.
