The development of forensics has improved the level of crimes being solved. Whenever first responders respond to crime scenes they are with people of different expertise. These people have different tools that allow them to collect evidence. There is trace evidence such as hairs, soil, fingerprints, footprints, shoe prints, gunpowder residue, glass fragments, carpet fibres, and similar items that are vital to crime scene processing. Depending on the crime scene, determines what technicians will be needed to respond to the scene Forensics uses a variety of different tools and techniques. Fingerprint collection through the use of grey or black magnetic powder. DNA and other bodily fluids are collected and, whether it is hair or fluid, for further examination in a lab. Shoe and tire prints can be collected using dental stone. Electronics are taken for examination by a technical expert to search for further evidence. Documents from the area are also taken for further examination. Ammunition and weapons are taken for matching to wounds and ballistics. Photographs of tool marks are taken because they can be matched to a weapon at a later time. Any other trace evidence is also collected. Trace evidence is anything left behind by a perpetrator or could have been transferred to the perpetrator. Interviews of both witnesses and victims of the crime are taken by law enforcement officials to gain knowledge and creating a timeline of events.