BY EMILY WAGSTER PETTUS BROOKHAVEN, Miss. (AP) - Witnesses began testifying Wednesday in the trial of two white men in Mississippi who are accused of chasing and shooting at a Black FedEx driver who had dropped off a package at a home. Brandon Case and his father, Gregory Charles Case, are charged with attempted first-degree murder, conspiracy, and shooting into the vehicle driven by D'Monterrio Gibson in January 2022. Gibson, who