TALLAHASSEE — In what would be Florida’s sixth execution this year, Gov. Ron DeSantis on Thursday signed a death warrant for an inmate convicted in the 1996 murder of a woman he met in an Escambia County bar. Michael Duane Zack, 54, is scheduled to die by lethal injection Oct. 3 at Florida State Prison, according to information posted Thursday on the state Supreme Court website. Zack was sentenced to death in the murder of Ravonne Smith during a crime spree that also included killing another woman, court records show.