Per a suggestion, I watched the “negative” of this video in very slow motion. It’s not IR and the “missile” looks like a native american arrow. Totally fake. Sorry I wasn’t more careful. But to keep some perspective, there’s no way in the world that this was an industrial accident, whether from fertilizer or whatever. You can’t get a supersonic shock wave of that size from a pile of fertilizer bags, even if individual bags were capable of creating a small version of it. It would take precise timing and placement of large numbers of small explosions to reach that magnitude, not something you’d get in a fire. Definitely a high explosive device of some kind.