EAST PALESTINE, Ohio (AP) — National Transportation Safety Board Chair Jennifer Homendy says Norfolk Southern repeatedly tried to interfere with the investigation into the East Palestine, Ohio, derailment and shape its conclusions about what the agency called a flawed decision to blow open five tank cars and burn the vinyl chloride inside. The NTSB also confirmed at Tuesday’s hearing that a flaming wheel bearing caused the February 2023 derailment in East Palestine. The agency approved more than two dozen recommendations to prevent similar disasters. Investigators say the railroad and its contractors ignored data about the tank cars and failed to accurately present information to decision-makers from the chemical manufacturer.