In this paper we introduce the DIORAMA based system that provides situational awareness for urban search and rescue operations in both indoor and outdoor settings, significantly improving the operations' efficiency. Using a Smartphone, DIORAMA enables the responders to triage patients with active RFID tags, and to mark the locations of trapped patients and points of interest (e.g. fire, chemical spill, collapse buildings). In addition, the tagged patients' location will be automatically tracked and updated on the interface. The incident commander can also interact with the responders on-site using the DIORAMA interface either on a Smartphone or a tablet. The DIORAMA system uses active RFID technology as well as visual analytics tools.