LEWISVILLE — In a nondescript Lewisville business park, ballistics evidence is processed in a lab tucked in the rear of an office building. The whir of the...
The National Integrated Ballistic Information Network stores millions of pieces of ballistics evidence nationwide, helping law enforcement generate investigative leads.
These images are taken by machines no bigger than an early-2000s computer tower and uploaded to a decades-old database utilized by the Bureau of Alcohol, Tobacco, Firearms and Explosives. A computer software then pings potential matches to other cases based on distinctive, fingerprint-like markings left on a casing ejected from the barrel of a semi-automatic gun.
Sorrells’ team loads evidence collected from across Dallas-Fort Worth crime scenes, as well as test fires weapons to see if the casing — with its specific firing pin impression, scrapes and ejector mark invisible to the naked eye — match other cases. An in-house technician then reviews computer-generated matches, and their analysis is double-checked by technicians at a lab in Alabama, he said.Sorrells said about 10% of NIBIN entries nationwide result in a lead.
Test ammo in the room where guns found on crime scenes are tested using a machine that catches bullets Monday, Nov. 14, 2022, at the Bureau of Alcohol, Tobacco, Firearms and Explosives Dallas Field Division in Lewisville. The Field Division has a National Integrated Ballistic Information Network unit that collects bullet casings that can be used to link crime cases.
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