DAYTON, OH – AUGUST 4: Law enforcement officials investigate the scene where a gunman opened fire on a crowd of people over night on Fifth Avenue in the Oregon District on August 4, 2019 in Dayton, Ohio. In the second mass shooting in the U.S. within 24 hours a gunman left nine dead and another 27 wounded after only a minute of shooting. (Photo by Matthew Hatcher/Getty Images)