Evidence can come from diverse sources such as from genetic material or trace chemicals to dental history or fingerprints. Evidence can serve many functions in any investigation, such as to trace an illicit substance, to identify remains or to reconstruct a crime. NIJ funds research and development to improve how law enforcement gathers and uses evidence. It supports the enhancement and creation of tools and techniques to identify, collect, analyze, interpret and preserve evidence
Following the partial police reports and crime scene sketches, I will adopt Crime scene forensic examination. This is because crime scene examination often document the crime scene. The investigators take photographs and physical measurements of the scene, identify and collect forensic evidence which in the sketches have been identified, and maintain the proper chain of custody of that evidence. Crime scene investigators collect evidence such as fingerprints, footprints, tire tracks, blood and other body fluids, hairs, fibers and fire debris. For instance form the sketches I Identified the victims and the positions of bod parts, the clothing, the jewelers, gold colored rings and pool of blood. Another reason as to why I will use crime scene forensic examination is because NIJ funds it to improve on blood identification and other .body fluids at the scene. The forensic team also has a responsibility of protecting crime scenes, preserving physical evidence and collecting and submitting the evidence for scientific examination.
I think NIBIN would be useful in this case. This is because NIBIN Program applies the Integrated Ballistics Identification System to compare and contrast the images of ballistic evidence that are obtained from the crime scenes and the recovered firearms.