1. A security system for an area under surveillance comprising: a first memory including ontology data stored thereon, the ontology data defining interrelationships between a scanner associated with access to a room of an area under surveillance, a camera with a field of view at least partially overlapping a footprint of the room, an identifier configured to be scanned by the scanner and associated with a person, and a security policy including one or more predefined conditions, which when satisfied, indicate when a security threat exists, wherein the security policy includes a response an operator is to perform if the conditions are satisfied; and a query module, executable by a processor, configured to receive a query and search the ontology data and temporal and spatial data associated with the area under surveillance in response to receiving the query.