Crime scene investigators collect and document evidence from crime scenes, and may take photographs of items at the scene. Forensic scientists, or forensic science technicians, work mainly in the laboratory, analyzing and examining the evidence brought in by the CSIs. The U.S. Bureau of Labor Statistics predicts that jobs in the field of forensic science will increase by about 31 percent by the year 2016, and for detectives and criminal investigators, employment should rise by 17 percent.