VIDEO: When they need to get out the door, firefighters have enough to worry about. But sometimes winter gets in the way. "It's harder on everybody and everything," said Rich Annen, Assistant Fire Chief for De Pere. A firefighter's greatest ally can shapeshift into a nightmare. "When you play with water, you're going to get wet," he said. "The closer you are to the nozzle, the wetter you're going to get." In severe cold, every call has multiple responders because these biting temperatures can knock off firefighters in a hurry. They run cycles to give everyone time to warm up. "The wind chills we're going to be dealing with this week, under ten minutes and you can get frostbite," said Steve Sellin, Green Bay's Battalion Chief.