If a foreign entity were to attack our agricultural capabilities they more than likely would've chosen the exact spot of the train disaster. The Upper Ohio River which feeds into the Mississippi River - 2 of the most used rivers in the US

The effects will basically wipe out the industry, at least long enough to cause chaos.

The long term fallout is an unknown equation, unfortunately, and more than likely will affect the Mississippi / Ohio River Basin and all the tributaries for many years to come.

I don't think people actually understand how far across the US this river reaches