The Firearms/Toolmark section is responsible for documenting, examining and comparing any evidence related to firearms or tools.  Using comparison microscopy, two objects are simultaneously compared to each other to determine if the toolmarks observed on them originated from the same source.  Firearm examination includes functionality testing, demonstration of operability, microscopic comparison, serial number restoration, and muzzle-to-target examinations.  Toolmark analysis includes the examination of any tool and/or toolmark.  Examples of tools are bolt cutters, screwdrivers, or knives; while toolmarks can be from any object that a tool can impart marks to, such as padlocks, cartilage, or wires.  If an object is broken into pieces, a fracture match examination can be conducted to determine if the two pieces were formerly a single unit.