Abstract: Local emergency-response organizations must maximize their use of existing resources. Therefore, emergencyresponse organizations need appropriate command-and-control (C2) systems to coordinate not only their own resources, but also to take advantages of other local actors. The local nature of response coordination imposes additional challenges for the development of C2 systems. In particular, the C2 systems must support coordination across organizational boundaries at the local level. Service-oriented architectures (SOA) provide new technologies for the development of C2 systems. This approach is based on a set of loosely-coupled services offered by multiple actors rather than a single monolithic system. This work reports the result of a prototype SOA implementation that builds on a previous requirements engineering study for service-oriented C2 systems for local emergency response. The results illustrate how it is possible to develop lightweight C2 systems using state-or-the art Web and SOA technologies. However, there are still remaining organizational and maintainability challenges.