This data flow is used within the Manage Emergency Services function and contains threat information based on processing and analysis of data collected from surveillance systems in secure areas, including those frequented by travelers (transit stops, rest areas, park and ride lots, modal interchange facilities, on-board transit vehicles, etc.) and those typically away from travelers (tunnels, bridges, roadway infrastructure). This data could include an alarm indicating that a threshold has been met or an audio or video pattern recognized, and could be a result of a single surveillance system or correlation of data from multiple surveillance systems. The data flow consists of the following data items each of which is defined in its own DDE:

+ geographical_area

Sub Data Flows

Parent Data Flows

Associated PSpecs