Providing simulation and virtual-reality solutions, the mission of Advanced Science and Automation Corporation is provision of advanced physics-based simulation and visualization software for the firm's customers. The firm's state-of-the-art software systems include: Integrated Virtual Environment for Synthesis and Simulation (IVRESS) and Dynamic Interaction Simulator (DIS) (see Products). Products include IVRESS, IVRESS/CFD, and LEA the most powerful object-oriented scene-graph based virtual-reality software tools for immersive visualization on the market, as well as DIS/CFD, DIS/Belt, and DIS/Tire time- accurate, explicit finite element solvers