Participants analyze a blank bar stock in an attempt to restore a serial number. Samples ship in January.

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Participants analyze a blank bar stock in an attempt to restore a serial number. Samples ship in July.
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Participants examine and compare the firearm evidence provided (expended bullets or expended cartridge cases) to determine if the suspect weapon fired the questioned evidence. Samples ship in May.

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Participants examine and compare the firearm evidence provided (expended bullets or expended cartridge cases) to determine if the suspect weapon fired the questioned evidence. Samples ship in October.

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Participants examine the evidence samples provided to determine if the suspect tool was responsible for the marks produced on the evidence. Samples ship in April.

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Participants examine the evidence samples provided to determine if the suspect tool was responsible for the marks produced on the evidence. Samples ship in September.

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Participants receive a questioned shot pattern and determine the shooting distance. Samples ship in October.

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Participants receive an evidence item and are asked to determine the shooting distance. Available in 2 test formats (photo and digital download). Samples ship in March.
 
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Participants determine an entrance hole and directionality; they also have an option to report horizontal and vertical angles as well as methodologies. Samples ship in August.

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