A system includes one or more wireless islands, one or more incident management applications, and one or more message management and routing (MMR) systems. Each MMR systems is configured to act as an intermediary for communication between one of the wireless islands and one or more of the incident management applications. One of the wireless islands includes a radio network. The radio network includes a plurality of remote sensor nodes (RSNs), and a gateway controller. An RSN of the plurality of RSNs is worn by ESS personnel, the gateway controller is mounted to an ESS vehicle, and the RSN is configured to wirelessly communicate with the gateway controller.