Have to be someone pretty high up to hit plants in Alabama, Oklahoma, and Texas all at the same time.
Or simply a common supplier.
If there is the possibility that an ingredient is contaminated at a warehouse you throw everything out.
You find a sack of dried milk for example that has been peed on by a rat you have to assume that every plant supplied by the warehouse got contaminated goods.
Remember the peanut contamination? We did not buy from them but we bought from the plant that made the candy bit, who bought from the company who made the candy, who sometimes bought from one of those plants.
So we had to throw everything out.
With food it is worst case scenario every time.