Actually, I've been trying to work up a client into paying for some brush pile burning, but haven't closed a sale yet. The blowers are damned expensive, renting the burner devices is even worse. I'm still working on building a pit and blower system. So far, no sales yet.
It you set a fire in Kansas City, it is a sure thing you will get a visit from the fire department. With no burn permit, they are likely to give you a ticket, too. Getting a burn permit isn't going to happen without you use a clean-burning fire pit blower, and even then there are rules to be followed.
Kansas City really protects its clean air standards. Using a tire to start a fire will get their attention, every time. They will even use the airport to track a fire's location with their radar and then dispatch the fire department. Go ahead! Ask me how I know.