The BEST Air Defence simulators provide comprehensive training for fighter controllers. Training applications range from perfecting basic skills up to participation in multi-user combat scenarios. All key elements can be adapted by the user to utilise confidential data in order to achieve operational and experimental goals. The facilities include: semi-autonomous forces, aircraft and performances, airborne radar, weapons, communications following national reporting rules, dynamic weather systems and tactical procedures. The systems are complete with: controller facilities, comprehensive instructor and pseudo-pilot tools, system management utilities and ongoing support services.