MVFC was dispatched to Route 11 in Shickshinny for a vehicle on fire. Engine 2 arrived on scene and found a box truck carrying mail off to the side of the roadway. Crews found that the brakes were on fire. The driver of the truck and State Police had dumped an ABC extinguisher prior to FD arrival. Engine 2 pulled the front jump line for extinguishment and cooled the braking area.