This article considers collaboration issue and data management issue as the key points of crisis management. In this context, the presented research works focus on a crisis management metamodel, dedicated to provide a way to class incoming data by connecting it to concepts of the metamodel. Such instances would then become intelligible for crisis management tools. This metamodel includes several points of view, specific to the domain of crisis management (including characteristics of the crisis, of the context, of the actors involved, etc.). Besides, the models built from this metamodel can be used as information bases for tools dedicated to support collaboration of actors: collaborative processes may be deduced from the models (and then orchestrated). Similarly, the evolution of the situation can be recorded as updates of the crisis models and contribute to the agility of the crisis management.