There are many well-adapted commercial simulation tools for specific problem domains. Many vendors concentrate on manufacturing, communications, and computer networks applications. The NPS Platform Foundation is a tool for modeling military platform engagements, and will support construction of a wide variety of models where platforms, sensors, humans, tactics, and information flow are important. Analysts (e.g. NPS thesis students) can use the Foundation's generic platform to configure or tailor objects to meet specific project needs by adding data to the performance database, by adding a layer of tactical methods, or by refining platform motion and sensor performance methods. Object- oriented simulation modeling.