Transportation Secretary Pete Buttigieg has issued a stern warning to the CEO of Norfolk Southern, a freight rail company, after a train derailment in East Palestine, Ohio, released hazardous chemicals into the environment. He has called on the company to take responsibility for its actions and to do whatever it takes to stop putting communities at risk. The incident is still under investigation, and it is unclear what caused the derailment. Norfolk Southern has yet to comment on the incident or on Buttigieg's letter.