In an early press conference, DeWine said both he and Shapiro were given the options by Norfolk Southern, and "they" decided to move forward with the vent and burn. Skip to 7:20 for DeWine's opening remarks.

But I can't find any information on who actually has the authority to make that decision. Even if both governors support the plan, is it their call to make? Or is that decision up to Norfolk Southern, EPA, NTSB?

I can't tell if DeWine is saying he and Shapiro gave official approval for NS to process with the vent and burn, or is he saying both he and Shapiro were advised of the plan and did not object to it? That's the biggest question: in what capacity did Shapiro and DeWine actually "approve" of the plan?