Federal authorities said Friday they arrested an Iraqi-born Nashville resident on illegal weapons charges during a sting operation set up after he made threats about "going Jihad." Ahmed Hassan Al-Uqaily, 33, was arrested Thursday afternoon as he was putting weapons he had purchased from an undercover agent into his car, according to an affidavit from FBI agent Greg Franklin. Authorities said the suspect paid $1,000 to buy two disassembled machine guns, four disassembled hand grenades and hundreds of rounds of ammunition from the agent, who was working with the FBI's Joint Terrorism Task Force. "This arrest demonstrates our ability to...