Firefighters rescued a man from a burning home Monday night in southeast Houston.

As freezing temperatures settled over Houston Saturday night, volunteers with Operation Patriot Packs spread out across downtown—driving block by block, under bridges and along sidewalks—searching for homeless veterans before the cold turned deadly.

A blast of Arctic air is expected to move into Texas late this week, putting the Houston area at risk for freezing temperatures. While there’s only a slight chance of snow, plumbers say there’s a much greater concern homeowners and renters should prepare for now: frozen and burst pipes.

After a round of storms Saturday, the cold front has moved through and southeast Texas has had a blustery and cool day Sunday.

There has already been confusion on whether “to drip or not to drip” during this week’s “big chill,” but that may no longer be an issue because several local officials are asking people in the surrounding Houston areas to stop dripping their faucets as it can cause more harm than good at this time.