The Extended Air Defense Simulation (EADSIM) is a many-on-many simulation of air, missile, and space warfare. EADSIM is one of the most widely used simulations in the world, with over 200 user agencies worldwide. The program is managed by the U.S. Army Space and Missile Defense Command/Army Forces Strategic Command (USASMDC/ARSTRAT) as the executive agent for the Missile Defense Agency (MDA).
EADSIM is the most mature and widely used force-on-force model in the world. It has received extensive examination by the user community, resulting in multiple accreditations. Extensive use of EADSIM has resulted in high-fidelity refinements that make it the preferred model for evaluation and validation of a broad range of weapon systems and capabilities. EADSIM incorporates user-driven capabilities with a proven, rapid-response capability to develop and support the model to meet evolving user needs. Teledyne Brown Engineering (TBE) is the original and continuing developer of EADSIM, which was first deployed in 1989.