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 an evidence item and are asked to determine the shooting distance. Samples ship in April.

Participants analyze evidence items contained within nylon bags for the presence/classification of ignitable liquid residue. A substrate comparison blank is provided. Samples ship in August.

Participants compare/identify samples consisting of synthetic and/or processed natural fibers. Samples ship in January.

Participants perform a comparative analysis of architectural or automotive paint samples. Samples ship in February.

Participants perform a comparative analysis of architectrual or automotive paint samples. Samples ship in September.