Three Norfolk Southern trains derailed in Pennsylvania Saturday morning. The incident left railroad cars along a riverbank and at least one partially in the river itself. There was a diesel fuel spill into the Lehigh River from the accident, and polypropylene plastic pellets spilled out from one of the derailed rail cars, police say. Norfolk Southern says containment booms have been deployed and the diesel and polypropylene plastic pellets will be cleaned up. https://nbcnews.to/4c1B30c