Combining an advanced Geographic Information System (GIS) with GPS, Computer-Aided Dispatch, and cross-referenced emergency handbooks, GEOCommand Mobile units operate independently or with existing data radio systems to display interactive maps, photos, documents, streamed video, and data from GPS-equipped sensors, including weather conditions, radiation, and airborne contamination. GEOCommand's unique combination of mapping tools and linked emergency data has powerful real-world applications. For example, responders can use sensor data together with isolation distances in the North American Emergency Response Guide (NAERG) to set fall-back zones and view areas of possible contamination before arriving at the scene. GEOCommand protects and assists first responders in their effort to save lives by providing instant access to information in an intuitive interface that is easily mastered and operated.