Presentation at Air Transportation Information Exchange Conference Today, mission planners and pilots must access and process an overwhelming volume of information (e.g. NOTAMs, special activity airspace data, airport data and weather), of which only a small portion of that information is relevant to the mission. In this presentation, we will demonstrate a Semantic Decision Support Tool (SDST) that pulls together information from disparate sources and delivers context-specific information to an end user (e.g. a pilot or an air traffic controller) based on, among other things, flight mission, phase of flight, and type of aircraft.