 Ohio police officers assigned to the convention shot and killed a homeless man today. Witnesses have told police that two men were in a physical fight in a park about a mile from Pfizer Forum, the site of the RNC. At some point, one of them pulled a knife. That's when police opened fire. Our officers are trained to recognize the threat. They're trained to stop the threat. We're trained to de-escalate if we can. We're trained to use a taser if we can.