Dayton Ohio Mass Shooting
Dayton, OH

A gunman who wore a mask, bulletproof vest and hearing protection was killed by police within 30 seconds of opening fire on Sunday in a popular nightlife district in downtown Dayton, Ohio, authorities said. Dayton Police Chief Richard Biehl released a timeline of the early morning shooting that left nine people dead, including the gunman's sister. Biehl said the shooter opened fire with a .223-caliber high-capacity rifle with 100-round drum magazines. Officers patrolling the Oregon District as the bars were closing shortly after 1 a.m. heard the gunfire and saw a large crowd running away, the police chief said.