1. A method of presenting surveillance data for an area, the method comprising: providing primary surveillance data for a set of primary events corresponding to one of a plurality of monitored event types for presentation to a user; obtaining a selected event from the set of primary events and a corresponding set of relatedness criteria; identifying a set of related events corresponding to another one of the plurality of monitored event types based on the surveillance data for the selected event and the set of relatedness criteria; and providing related surveillance data for each related event for presentation to the user.