 And for a second night in a row, Trump was in the audience. Matt Piper, CBS News, Milwaukee. An investigation is underway in Milwaukee into the shooting death of a man by police officers in the outer perimeter of the convention. Milwaukee Police Chief Jeffrey Norman says 13 Columbus, Ohio police officers, helping with RNC security, saw a man with two knives charge an unarmed person and ignored commands to drop the weapons. The audio may be disturbing to some. Drop! Drop the knife!