Firearms/Toolmarks

Firearms/Toolmarks

Mission

The Firearms-Toolmarks Unit (FTU) applies valid scientific practices in the forensic examination of firearms, ammunition components, toolmarks, gunshot residue on victim clothing, bullet trajectories, and closely-related physical evidence.

The Team

Physical science technicians, physical scientist, physical scientists (forensic examiner), special agents, ammunition specialist, and management and program assistant

The Work

Physical Evidence

Examine evidence related to firearms, firearm components, ammunition, ammunition components, tools, and toolmarks.

Gun Shot Residue

• Examine lead and other metal fragments, shot wads, shot cups, and bullets removed from bodies at autopsy;
• Examine and microscopically compares bullets and ammunition components to each other, as well as any other firearms to determine whether an association exists; and
• Examine evidence in toolmark cases including screwdrivers, knives, crowbars, saws, chains, human bone or cartilage, locks, bolts, and screens.

Toolmarks

• Examine and identify a toolmark as having been produced by a particular tool to the exclusion of all others;
• Perform shot pattern examinations, gunshot residue examinations, trajectory analysis examinations, and serial number restorations exists;
• Provide support in investigative and administrative matters, including the collection, preservation, and processing of evidence and crime scene reconstruction, both nationally and internationally;
• Serve as liaison with national and international forensic laboratories;
• Provide extensive training to members of law enforcement agencies, crime scene personnel, and investigators; and
• Testify in legal proceedings.