They're usually out helping others, but fire crews in Allentown found themselves battling a blaze on their own turf Sunday.
Ladder Truck 2 was on its way to a house fire when flames sparked on one its rear wheels.
Officials say they think the truck's heavy use and the brake line may be to blame.
Crews were able to put the small fire out quickly.
Truck 2 will be out of service while minor damage is fixed.