QTR posted a good article on the food processing plant fires.

Analyst Comment: One important note is that there are over 36,000 food and beverage processing plants in the United States, so even if these are intentional acts, they are disrupting maybe .05% of the food supply. Meanwhile fertilizer shortages will impact most food supply chains. Keep your eye on the fertilizer!

Food Processing Plant Fires: Conspiracy or Coincidence?

USDA Food and Beverage Processing Plants