 Law enforcement officers often receive inquiries and demands about their investigations that stem from unrealistic portrayals on television . In a 2010 survey of Canadian police officers , some were frustrated by these CSI @-@ affected queries , though most saw them as opportunities to inform the public about real police work . New technologies and the increased public awareness of forensic science have stimulated new interest in solving cold cases and encouraged higher accountability among police investigators . However , the increased demand for forensic evidence can cause an unmanageable workload for forensic laboratories . Some crime labs process several thousand cases every year . Many law enforcement agencies have insufficient storage space for the increasing amount of physical evidence they collect . In some investigations , DNA evidence is not collected simply because there is not enough space to store it properly . 
