A task-based messaging approach to facilitate staff work

A central part of the work in Incident Commands (ICs) deals with handling messages that contain relevant information. Classification schemes for messages can be exploited by command staff and assisting tools to support this work, given that a common understanding of the scheme is shared among participants. We present user studies on two such classifications, which imply some disagreement among participants. Interpretations of the studies and a revised scheme are presented. All users in our studies are highly trained experts and represent the state of the art in german IC work.