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

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.

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.

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.

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.

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

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.