Police investigating an apparent suicide collect the following items at the scen

Police investigating an apparent suicide collect the following items at the scene: A note purportedly written by the victim, a revolver bearing very faint fingerprints, and traces of skin and blood under the victim’s fingernails. 
Which units of the crime laboratory will examine each piece of evidence?
2. You are the first officer at the scene of an outdoor crime scene. You find the victim bleeding, but conscious with an apparent stab wound in her abdomen. There is a hunting knife lying near the victim. The victim’s friends and several onlookers are standing nearby. You call for back-up and an ambulance and note that no one is fleeing the scene. 
Describe the steps you would take while you wait for back-up to arrive. 
250 words per question with one reference 
need in 6-8 hours

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