Final Response - firefighter crime series

Canada Book Award Winner - The brutal Polar Vortex has grown stronger with every winter, ravaging a major Canadian city that is evacuated until springtime. Fire Captain Jack Sellars and his firefighters are contracted by Vulcan Securities with one mandate: do NOT let the city burn down. With no power or gas, and every citizen gone, what could possibly happen?But the criminal gangs didn't get the memo and begin looting the city.
Captain Jack's crew are witnesses to murder when drive-bys on the fire station begin. Their sanctuary is the fire station but the weight of the snow begins to bear on the roof creating yet another danger. Making it alive to springtime is going to take a miracle.