I have a Nephew that drives for UPS and the extra fee for "Hazardous Items" is a joke !
They make loads of extra money off of it and do nothing different with those packages then they do with anything else.
I asked if they are put in a steel fireproof box on the truck or some kind of special fireproof container at all. Nope, just toss the box on the shelf with the rest of them.
They deliver fireworks, rifle primers, bulk cans of black-powder all just placed on the floor or shelf of the delivery trucks.