New York University Bioinformatics group are using Repast to develop a agent based model simulation framework able to simulate the emergency responses in urban settings entitled PlanC. Catastrophic scenarios simulated include bomb explosion, the spread of small pox and food poisoning. The tool is intended to devise plans (such as time to recovery) for such scenarios based on the modelling of a large number of individual agents. The Models incorporate GIS data with agent based modelling (utilizing Repast)
Further reading/references such as the study of food poisoning in Brazil, or a hypothetical Sarin attack within Manhattan can be seen on the project website, along with a software demo. The site also claims the software will be available soon.