Crime scene investigators (CSI) is an investigator, that is in charge of the crime scene cases. The crime scene investigator responsibility is to properly document the scene and identify, process and collect physical evidence. Their expertise is in photography, sketching, processing latent and patent evidence, which includes fingerprints, footwear impressions, trace, hair & fibers, biological fluid, such as DNA and blood spatter pattern analysis. Police officers, or law enforcement, focuses on protecting the people and property in the community, patrol the areas that they are assigned to, which sometimes can include entire jurisdictions, respond to calls, enforce laws, make arrests, issue citations, and occasionally testify in court
