The Amber Guyger Trial: More fallout.
A key prosecution witness in the trial of the former Dallas police officer who killed her own neighbor has, himself, been gunned down. Joshua Brown lived across the street from Botham Jean, the man whom Amber Guyger shot, mistakenly believing that she had walked into her own apartment, instead of his. Meanwhile, the Dallas County district attorney has been ordered to appear before the judge who presided over the Guyger trial. ABC's Jim Ryan is following and joins Tony with the latest.