The camera is always accompanied by a white station wagon or by a black or, more commonly a white, silver or brown Nissan X-Trail, staffed by an un-sworn police officer (not a contractor) who is responsible for assembling and disassembling the unit, supervising it and operating the accompanying laptop in the car for the few hours that it is deployed at a location. The Nissan X-Trail usually has a bull bar and spotlights on it and a large, thick antenna. The camera stays usually for about 4 to 5 hours. There were 25 in use in Perth at the beginning of 2008.