#DAYTON, #Ohio (AP) — A gunman wearing body armor and carrying extra magazines opened fire in a popular nightlife area of Dayton, Ohio, killing nine and injuring dozens, authorities say, in the second U.S. mass shooting in less than 24 hours. Dayton police patrolling the area responded in less than a minute to the shooting, which unfolded around 1 a.m. Sunday on the streets of the #Oregon District, Dayton Mayor Nan Whaley said at a press conference. Whaley said if the police had not responded so quickly, "hundreds of people in the Oregon District could be dead today." The gunman, who has not been identified by authorities, was shot to death by responding officers. Whaley said he was carrying a .223-caliber rifle and had additional high-capacity magazines with him. Police believe there was only one shooter, and have not yet identified the suspect or a motive. At least 26 others are being treated at area hospitals, though no details about their conditions have been released. #MiamiValley Hospital spokeswoman Terrea Little said the hospital had received 16 victims, but she couldn't confirm their conditions. Kettering Health Network spokeswoman Elizabeth Long said multiple victims from a shooting had been brought to system hospitals, but she didn't have details on how many. https://www.instagram.com/p/B0vqJ0VDhdc/?igshid=6de56mlldfa5