Residents of eastern Ohio can now get an up-close view in newly released videos of the toxic fireballs that forced them from their homes last February when officials decided to blow open five tank cars filled with vinyl chloride they worried might explode days after a Norfolk Southern train derailed. The National Transportation Safety Board released more than a half dozen videos of the fire and huge plume of black smoke it generated along with a number of documents unearthed in their investigation about what went into the decision to release and burn the vinyl chloride. Those documents reinforce the questions raised last spring at the hearings the NTSB held in East Palestine, Ohio, about whether the vinyl chloride tank cars really would have exploded while they were surrounded by the fire from the derailment. The officials who made that decision have defended it, and said they made the best call they could with the information they had available that day. Residents are still worrying about the potential health consequences of that decision and the derailment itself as the one-year anniversary of the derailment near the Ohio-Pennsylvania border approaches on Saturday. The key health questions remain unanswered although many who live in East Palestine just want to move forward with rebuilding their town. State and federal EPA officials have said their tests haven't shown toxic levels of chemicals since the evacuation order was lifted. The massive cleanup that included removing more than 176,000 tons of contaminated soil from around the derailment continues, but it could wrap up around the middle of this year if the latest tests don't reveal problems that were missed earlier in the cleanup.