Racine County Sheriff Christopher Schmaling says a double-fatal accident on Interstate 94 Wednesday is the worst he has ever seen. An explosion and fire blocked traffic on the busy highway for hours. The sheriff says one of the two truck drivers killed is a hero because he chose to drive off the road to avoid making the crash even worse. When his big rig left the roadway it burst into flames. Several people involved in the multi-car pileup were treated for injuries.