Crews from Tucson Fire and South Tucson Fire responded to a building on fire at Tucson Greyhound Park Wednesday evening.
Tucson Fire says the building was believed to be vacant, leading the crews to take a “defensive approach” to battling the flames.
The roof of the building collapsed, burying the fire beneath ruble. Crews stayed above the structure, spraying nearly 55,000 gallons of water into the building from ladders…