Regional Information Sharing Systems (RISS) analysts develop specialized analytical products for investigators and prosecutors to increase their ability to identify, detect, and apprehend suspects, as well as to enhance prosecutorial success in court. These products include highly complex and specialized flowcharts, link-analysis charts, crime scene diagrams, and telephone toll analysis reports, as well as financial analysis reports, computer forensic analyses, and audio/video enhancement services. Digital forensics focuses on the analysis and retrieval of information from computers and digital storage media. Digital forensics analysts uncover deleted files; locate evidence; evaluate the structure of computerized files; analyze other computer and cellular phone activity within hard drives, CD-ROMs, and JPEG images; and analyze e-mail seized during investigations. Audio and video enhancements have become extremely common inside the courtroom and serve as a finite way of assisting law enforcement and prosecutors in convicting criminals. The enhancement of audio bites or video footage assists law enforcement in identifying suspects. Audio enhancements are useful for undercover operations because analysts have the ability to remove background and frequency noise, enabling investigators to clearly identify the suspects. Analysts have the ability to enhance video footage in order to present a clear picture, which is extremely useful in robbery and burglary cases.