The federal government auctioned off disaster-response trailers at fire-sale prices just before Harvey devastated southeast Texas, reducing an already diminished supply of mobile homes ahead of what could become the nation’s largest-ever housing mission.

More than 100 2017-model Federal Emergency Management Agency trailers were sold over the two days before the Category 4 hurricane landed in the Gulf Coast, an analysis of government data by The Associated Press found. Harvey was already projected to be a monster storm that would inflict unprecedented damage.

The trailers were designated to be sold through Aug. 28, after floodwaters sent thousands of Texans onto rooftops and into shelters.