It is of the utmost importance, we argue, to specifically tailor disaster response systems with users' collaboration in mind. Such an approach, building on top of, and extending the classic single- and multi-user Human-Computer Interaction paradigm is described in this paper. In what follows, we outline our evacuation support system for walking wounded. The proposed system follows a user-centered design method, coupled with navigationally relevant aspects of human cognition and exemplifies our collaboration-oriented design.
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