To use defensive Aids suites (DAS) within a network is an important concept for the future. The project EW Mission Lab has compared different existing methods for evaluating and assessing different concepts and ideas. Perhaps the most important method is to use dynamical scenario simulations. To use stand alone simulation programs for this purpose is the simplest solution but could limit the possibilities to investigate the impact of having an operator. Therefore, the project has investigated the possibility to use existing simulators within the armed forces for mission simulations with electronic warfare (EW). The problem is that few of these simulators contain EW components that are accurate enough to be able to draw any conclusion about the use of EW. The Swedish Air Force Combat Simulation Centre (FLSC) has been used as a testbed to show how EW components from FOI could be integrated in to an existing simulator. Several propositions have been made and presented and a model for flare and chaffs has been implemented. Another example of integrating EW components into an existing simulator, which has been studied within the project, has been the integration of EWSim, which is a framework for EW simulations, with an environment for operators which includes a dynamic platform and different interfaces for presenting DAS information. For the future it would be valuable to have standardized interfaces between components used for simulations of missions with EW content. The project has initiated an international cooperation to study how such a standard could be implemented.