13 arrested, 16 guns recovered & drugs seized in undercover investigation in Ken Knight Drive area: JSO The Jacksonville Sheriff’s Office announced yesterday the arrest of 13 men accused of drug and gun-related charges as part of its monthslong undercover investigation called “Operation Knight Fall.”   According to Sheriff T.K. Waters, the investigation was possible thanks to a resident’s anonymous complaint about illegal drug activity in the Ken Knight Drive area.   Law enforcement recovered 79 grams of fentanyl, 300 grams of methamphetamine, 1,849 grams of MDMA and ecstasy, and other drugs.   What else police found