Regardless of the type of crisis and its complexity as well as the difference of culture, objectives and priorities of the multitude organizations involved, emergency response requires effective communication in order to achieve situational awareness within inter-organizational collaboration, make decision and achieve their own objectives. However, actors are challenged by several problems. Among them, weak interaction and information exchange, unavailability of information at the right time etc. Our contribution outlined in this paper is suggesting an approach based on an empirical study conducted in France. The objective of this approach is to mitigate inter-organizational communication problems and support situational awareness (SA) by distributing needed information at the right time.