Guidance from the Office of the Secretary of Defense (OSD) in the form of the Joint Test and Training Range Roadmap (JTTRR) attempts to merge and leverage test and training range efforts where feasible. A multi-year effort being performed under the Office of the Director, Operational Test and Evaluation (DOT&E) CROSSBOW program is providing for the concurrent integration of common weapon simulations into architectures which support real-time live-fly exercises on the open air ranges (OARs) and into a high fidelity integrated air defense system (IADS) model. The real-time surface-to-air missile (RTSAM) models, which are being developed and validated under the cognizance of the Defense Intelligence Agency/Missile and Space Intelligence Center (DIA/MSIC) in Huntsville, Alabama, are related to those being developed under OSD's Joint Modeling and Simulation System (JMASS) Program.

Information regarding the mission and purpose of the CROSSBOW committee is provided, followed by a description of the RTSAMs and their specific relation to the JMASS Program. The individual integration efforts are then discussed in detail, with primary emphasis upon the integration in support of real-time OAR exercises. Topics discussed include system and subsystem requirements definition, concept of operations (CONOPS) development, porting/verification of software to the selected computer platform, development of software utilities necessary to represent site-specific operation, and comparative validation efforts following integration.