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How the ATF Finds a Gun's Fingerprint on a Shell Casing

How the ATF Finds a Gun's Fingerprint on a Shell Casing

The ATF's National Integrated Ballistic Information Network is able to compare shell casings to link them to guns and crimes. ATF IBIS Chief Walter Dandridge shows how it works. (Published Monday, Jan 14, 2019 | Credit News4 I-Team)