Platform Collapsing News Today

Hook. if you want to help build custom designed smart homes for each of the brave men. go to building for americas bravest. it is easy. ourbravest.org. and thanks so much for reaching out and trying to help, gregg? >> all right a a 4th of july celebration as you can see turning to horror on the ground. two dozen people injured when a platform collapsing and sending pyrotechnics shooting in the crowd on the ground. dom nick, explain how it happen? >> apparently four flying rockets went up and the...