Noise response Feb. 8 — Ace Hardware employees heard a loud thump on the store’s roof, then saw smoke coming from the heating vents in the store. The employees called 9-1-1, then evacuated the store. Firefighters used a ladder to access the roof and found a 4-inch slab of ice that measured 2 feet by 3 feet that had formed on the rooftop air conditioning unit. The smoke was actually steam that had been released from the unit after it came in contact with the ice. Power was turned off to the air conditioning unit, and the store was reopened.

