||During the last decades there has been a lot of attention to issues of safety, emergency response and crisis management. Emergency response rooms (ERRs) are interesting public sector organizational arrangements in this respect. In our paper we pay attention to emergency response rooms in the Netherlands and especially in Amsterdam. Using an ethnographic approach, we studied the fire brigades (red), the medical services (white) and the police (blue) including their back-office organizations, their habits, and the systems in-use. As could be predicted, the (technical) integration of ERR systems in the Netherlands was not unproblematic. In our contribution we will make clear that the organization of the safety response in Amsterdam is rather fragmented. The latest discussion in the field is about the introduction of net-centric work, a concept based upon the interactive internet 2.0. Yet, it is not so much the technology, as well as the institutional arrangements that are at stake.