Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Two US Mass Shootings Leave 29 Dead, Dozens Injured Ken Bredemeier WASHINGTON - In 13 hours of carnage in the United States, two shooters in separate incidents killed 29 people and injured dozens, leaving authorities searching for motives behind the mayhem. A gunman wearing body armor and carrying extra magazines of ammunition was shot to death by police less than a minute after he opened fire early Sunday in a popular nightlife area in the Midwest city of Dayton, Ohio, killing nine people and injuring at least 27, four of them seriously. .