SEER Technology, Inc. developed tactical personnel tracking and chemical recognition products, NAViSEER (shown) and AccuSense, for use in Immediately Dangerous to Life and Health (IDLH) situations in first responder, public safety, government and commercial markets. These products allow customers to "see what can't be seen" to protect lives and increase productivity in dangerous environments. The NAViSEER product is a Precision Personnel Tracking system used by on-foot personnel in GPS-denied areas, such as inside buildings, tunnels, caves, mines, etc. NAViSEER combines an on-board GPS with a precision Dead Reckoning (DR) system which takes over when GPS is unavailable and is compatible with many digital radio systems. The NAViSEER Precision Personnel Tracking system includes SEER3D visualization software. SEER3D allows rapid geo referencing and wireframe extrusion of any building on earth so that commanders can see and command their tactical deployments in real-time. AccuSense is a lab quality, highly portable Chemical Recognition System based on dual hyphenated gas chromatograph technology which identifies up to 16 different chemicals simultaneously, along with the concentration level of each chemical. AccuSense works on a 3 minute sample cycle, uses no consumables, and operates both as a fixed location continuous operations unit and as a point detection solution.