 A.B.C.'s Mary Bruce in a park about a mile away from the convention hall. Five Columbus, Ohio, police officers working security for the convention shot and killed a Milwaukee man, brandishing two knives in a fight with another man and ignored repeated commands to stop Columbus Police Union boss Brian Steele. Our officers are trained to recognize the threat. They're trained to stop the threat. We're trained to deescalate if we can. We're trained to use a taser if we can.