Chemical incidents, whether they are peace-time accidents or war-time chemical attacks, can have severe consequences both in terms of people affected and damages sustained. A civilian or military commander facing this type of situation is in great need of efficient and easy-to-use decision support to deal with issues like who to warn, who to move out csf the area and where it is safe to establish decontamination stations. In this paper we demonstrate how simulation models for chemical agent propagation are incorporated in a decision-support system for management of chemical weapon attacks. In a common framework, provided by a geographical information system, we combine models of different complexity and granularity to support rapid and automated warning, selective stand-down, chemical agent detection management and casualty predictions. The system has been implemented for incorporation in the Swedish Naval Forces' (CI)-I-3 system and has been submitted for tactical evaluation.
