In order for First Responder Command and Control personnel to visualize incidents at urban building locations, DHS
sponsored a small business research program to develop a tool to visualize 3D building interiors and movement of First
Responders on site. 21st Century Systems, Inc. (21CSI), has developed a toolkit called Hierarchical Grid Referenced
Normalized Display (HiGRND). HiGRND utilizes three components to provide a full spectrum of visualization tools to
the First Responder. First, HiGRND visualizes the structure in 3D. Utilities in the 3D environment allow the user to
switch between views (2D floor plans, 3D spatial, evacuation routes, etc.) and manually edit fast changing environments.
HiGRND accepts CAD drawings and 3D digital objects and renders these in the 3D space. Second, HiGRND has a First
Responder tracker that uses the transponder signals from First Responders to locate them in the virtual space. We use the
movements of the First Responder to map the interior of structures. Finally, HiGRND can turn 2D blueprints into 3D
objects. The 3D extruder extracts walls, symbols, and text from scanned blueprints to create the 3D mesh of the building.
HiGRND increases the situational awareness of First Responders and allows them to make better, faster decisions in
critical urban situations.