Naval Surface Warfare Center Dahlgren's Combat Direction Systems Activity (CDSA) in Dam Neck, Va. and USS Curtis Wilbur (DDG 54) achieved several significant new milestones in computer simulation support of live exercises during the recent Exercise Foal Eagle. training support to shore-based air and missile defense units in the Korean peninsula. ability to train in other warfare areas during the exercise. Defense Exercise Network (CAMDEN) -- designed to present user systems with a realistic depiction of the aircraft and missiles expected in an area of conflict. developing tactical situation. In the case of joint exercises such as Foal Eagle, units must also learn to operate with units from other services, thereby enhancing interoperability among the services.