How should tool mark evidence be collected and what information can be gained?

Discuss footwear and how impression evidence is collected. Include a discussion of the databases used for comparing evidence.

Discuss Gun Shot Residue (G.S.R.). Include the two types, the importance of each, and what this information may provide.

What steps must be completed to ensure firearms evidence is correctly collected and preserved?

How would you go about collecting impressions in each of the following situations?

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