This proposal describes a method for addressing the data overload problem that results from multiple-target, multiple-sensor tracking. The measurement of tactical data quality is based on the present and future tactical states, the data that must be considered, and the types of decisions that are relevant in those states. The initial effort (Phase I) will apply concentrated study to a selected warfare area, Anti-Air Warfare (AAW) . Work would proceed in the following manner: determine types of data, identify tactical states, identify available decisions, analyze data relevance in each tactical state, and develop a tactical decision aid (computer program) that monitors the tactical state and tactical decisions, and based on these, measures the value and prioritizes incoming tactical data. Test the tactical decision aid using wargaming scenarios on ENWGS. The personnel proposed to conduct this project have extensive experience in naval warfare decision making in data-saturated conditions, and they are familiar with computer-based combat direction systems (operational/developmental).