Representatives of the Norfolk Southern railway company, whose train carrying the chemicals derailed 13 days ago causing a huge fire, cited security concerns when they pulled out. While officials at the event acknowledged that the toxins from the derailment had been deadly to wildlife - particularly fish - the head of Ohio's Health Department, Bruce Vanderhoff, told the crowd that the concentrations of toxins in the air and in water supplies were far below that which could harm humans. "On Thursday, the head of the US Environmental Protection Agency (EPA), Michael Regan, is expected to travel to East Palestine to meet with local officials and assess the response to the derailment