OMAHA, Neb. (AP) — Officials say firefighters who responded to February’s fiery train derailment in Ohio struggled to immediately identify the hazardous chemicals the train was hauling due to poor communication from the railroad. The National Transportation Safety Board is holding a rare field hearing in East Palestine on the Norfolk Southern derailment. The fire chiefs whose departments were first on scene said Thursday that firefighters need more hazardous materials training. Officials involved in the response defended their decision to release toxic vinyl chloride from five tank cars and burn it because they believed it was their only option to keep them from exploding.