ATAC Corporation engages in the development and application of computer models, simulations, decision aids, and analysis tools for the aviation industry. The company offers airport planning, airspace operations design and analysis, environmental impact assessment, military aviation, model development, and operational performance analysis. Its services include airport master planning, benefit-cost analysis, design of new airports, and runway expansion and reconfiguration projects by providing airfield and airspace simulation/analysis and noise impact assessment. The company also offers Simmod PRO!, which provides dynamic airfield and airspace rerouting; complex taxiing operations; departure queue sequencing; ground vehicles; disruptive events; human resources and activities; operating concepts; and complex interactions among neighboring airports. In addition, the firm offers several products including Integrated Noise Model, a computer program that calculates noise exposure contours in the vicinity of airports; GRADE (graphical airspace design environment); and SkyView, an integrated toolset for air traffic operations analysis. It offers solutions and services for various applications for airports, air traffic service providers, military aviation operations organizations, and aviation operations research professionals. In addition to its headquarters in Santa Clara, the firm has offices in VA, NJ and San Diego.