The Crime Scene Unit Supervisor is also required to maintain proficiency in performing the duties of a Crime Scene Technician, which includes: photographing all types of crime and accident scenes to record the appearance of evidence using highly-skilled photographic and other evidence gathering techniques; identifying, collecting, and securing physical evidence, such as blood, body fluids, hair and fibers, and firearms for laboratory testing and use as evidence in criminal prosecutions; searching for and developing latent prints at crime scenes; photographing and fingerprinting suspects, investigate leads, victims (including deceased individuals), and witnesses; producing castings and comparative photographs of footprints, tire tracks, and other impressions; and testifying in court. Computer, calculator, TV/DVD player, projector, audio/video still and motion recorders, printer/fax/copy machine, measuring devices, manuals, ordinances, Personnel Resolution, regulations, reports, evaluations, records, correspondence, periodicals, two-way radio, reference materials, statutes, building codes, telephone, regular office supplies.