On March 22, the hill above Oso, Washington gave way. A massive mud slide swept through the town below, killing over 40 people, destroying the town and damming the north fork of the Stillaguamish River. The debris field stretches over one square mile. Some survivors were rescued in the immediate aftermath of the mudslide on that Saturday morning, but hundreds of searchers, including local volunteers scouring the area for family members and friends, and specially trained dogs