On Feb. 3, 2023, a Norfolk Southern freight train carrying hazardous materials derailed after a railcar's wheel bearing overheated, causing a fire. Three days later, officials conducted a "controlled release" of several tank cars that were filled with vinyl chloride, a toxic and flammable gas that can cause certain cancers, to prevent an explosion.

A new lawsuit alleges for the first time people died because of the disastrous 2023 East Palestine, Ohio, train derailment.

Vice President JD Vance visited East Palestine on Monday to see what still needs to be done and how to avoid another disaster.