The Federal Aviation Administration William J. Hughes Technical Center (WJHTC) has developed state-of-the-art capabilities for conducting research in the areas of virtual environments and advanced visualization, also known as Virtual Reality (VR). Virtual Reality is a concept for computer-human interfaces which uses new technologies and techniques which are more natural and effective than existing interfaces. Users can dynamically interact with a three dimensional (3-D) graphical representations of concepts, designs, and data sets that might otherwise be too complex to visualize.