This paper models a scenario in which agents, that can be seen as First Responders, smart devices and/or robots explore the environment and exchange information in an emergency situation, i.e., after an earthquake, assessing damages, and searching for people needing assistance. While moving, the agents observe events and exchange the information collected with other agents encountered, thanks to common network connections. When some conditions hold, the agents can upload the collected information to a Control Room/database in the Cloud. The model includes a detailed description of how data are exchanged between agents and stored in the database. A simulated experiment has been carried out in a real-world street network, with the aim of evaluating the feasibility and performances of the approach.