About 200 fire-fighters battled to put out a massive fire at an empty warehouse in Chicago as glacial temperatures turned water to ice.
Fire department officials said the blaze on Tuesday evening was among the biggest in recent years.
About a third of the city’s fire-fighters were at the scene at one point or another.
The cause of the blaze in the vacant building is still being investigated.
The efforts to tame the fire, which threatened an adjacent building, were made difficult by temperatures that were well below zero, encasing fire trucks and the building into ice.
Water froze on the fire fighters’ uniforms and gloves. After several hours, the fire was put out, with ice sheets covering the remains of the building.
The American Midwest has been experiencing a cold snap since the weekend, with freezing Arctic air coming from Canada.