Grand jury decides not to charge anyone , prosecutor says . But families on a parade float are on railroad and owner of the parade float , a law firm says . Two veterans were killed and more than a dozen people were injured when train hit float . Accident happened during ` ` Day for Heroes '' parade to honor U.S. veterans .
Grand jury decides not to charge anyone , prosecutor says . But families on a parade float are suing railroad and owner of truck pulling float , a law firm says . Four veterans were killed and more than a dozen people were injured when train hit float . Accident happened during `` Hunt for Heroes '' parade to honor U.S. servicemen .