Since 1979, ATAC has provided simulation and analysis to the aviation community. ATAC's dedicated staff is passionate about t ... he development and application of computer models, simulations, decision aids, and analysis tools. ATAC's comprehensive services include - Airport planning, Airspace operations design and analysis, Environmental impact assessment, Military aviation, model development and operational performance analysis. ATAC's state-of-the-art products - Simmod PRO!, Aviation Environmental Design Tool (AEDT), Graphical Airspace Design Environment (GRADE), Range, Airspace and Airfield Data Analysis and Reporting System (RAADARs) and SkyView. read more