Sasie System Analysis, Simulation and Evaluation SASIE (System for Analysis, Simulation and Evaluation) is a tool to analyze the functionality of systems (e.g. weapon systems) as well as of complex exercises and to evaluate their effectiveness. Data from multiple sources are considered in the analysis, so as to provide an integrated view of all relevant aspects. This helps the user to gain a global understanding of the functionality of individual complex systems and of their interaction within the system as a whole. From this overview perspective, the user can access detailed information on any of the subsystems; These features make SASIE a powerful tool in the analysis, evaluation and development of complex weapon systems and an indispensable aid in the integration of different systems into one network (Network-Centric Operation, NCO).