Jim Aksel, Principal at ProjectPMO in Anaheim, California, has consulted for several major aerospace companies in project and schedule management. In this case study, he discusses how he helped a major aerospace company deal with schedule risk analysis for the development of defensive missiles. Their end-buyer, the US Navy, required the company to use a more quantitative and rigorous method for evaluating the credibility of their Schedule Model and to use the model as a predictive tool in program management. Thanks to using @RISKin conjunction with Microsoft Project, Aksel was able to provide the company a rock-solid model proving that their schedule estimation was reliable.