The handheld infrared camera is sensitive enough to detect the heat generated by a human or a motor boat engine from as far away as 1,500 feet. The camera enables members of the county's narcotics task force to monitor beaches and interior cover areas. The camera is effective even in dense fog and does not require operation by a skilled technician. Chemicals, such as red phosphorus, throw off heat and enable the camera's infrared imager to detect marijuana growing areas and methamphetamine laboratories. Armed with convincing infrared images recorded on videotape, the narcotics task force can then apply for a search warrant. In a 1991 drug bust, infrared imaging was used to seize more than 5,000 marijuana plants and 225 pounds of dried marijuana with a street value of over $5 million, as well as $500,000 worth of equipment.