What can Crime Scene Investigators (or Crime Scene Officers) do that might jeopardize a case?

2. What can Crime Scene Investigators (or Crime Scene Officers) do that might jeopardize a case? Similarly, what can they do to improve their chances of discovering evidence at a crime scene?

3. When you testify in court you may be asked to explain courtroom exhibits and displays. Identify and discuss different types of exhibits and displays that might be used. Who creates these displays? Do these displays have to be approved by the judge?