This will apply to all crime scenes that are left intact and are not disturb by the victims, paramedics or police officers. Never, never assume or guess at the reconstruction without all the facts from the interpretation. As trained crime scene technicians you are expected to develop the maximum amount of information from the crime scenes. This information is developed by processing the scene for physical and testimonial evidence. The testimonial evidence is the interpretation of the facts in the crime scene.
Lets take an armed robbery at a convenient store as an example.
The store clerk is approached by an armed suspect who robs the store and flees from the store, jumps into an awaiting car and escapes from the scene. The store clerk gives the investigators a statement as to what has occurred. This statement will include what the store clerk observed. Their observations will include the description of the suspect and vehicle. This is testimonial evidence.