On a summer evening inside Suburban Station in 2019, a transit police officer’s gun went off. It was a Sig Sauer P320, a model that SEPTA police started using in 2016 but that had also given rise to reports of misfires and lawsuits claiming the weapon was defective. Officer Craig Jacklyn’s Sig Sauer P320 was in its holster. His hands were not on the weapon when it fired, he says, and authorities would later conclude the gun discharged through no fault of his own.