DoubleCheck has developed cutting-edge AI technology that can flag harmful intent and troubling criminal history before a potential shooter purchases a weapon. DoubleCheck offers a concurrent screening process that runs alongside the existing point-of-sale system. It provides additional information that the federal process may miss on the National Instant Criminal Background Check System (NICS) without adding any time or friction at the register. By examining felony arrests versus convictions across all jurisdictions, DoubleCheck ensures a more comprehensive and accurate understanding of an individual’s criminal history. These case studies show shooters who passed the NICS check, enabling them to purchase weapons to commit their horrendous crimes. DoubleCheck would have identified criminal history preventing weapons purchase.