 A disaster emergency in the Heartland following catastrophic flooding in Iowa. 21 counties virtually underwater following massive rainfall, which appears to have blindsided many residents early Saturday, now forced to be evacuated. Drone video capturing the aftermath of the torrential downpours in Sioux County. The water submerging homes as rescue crews scramble to reach stranded residents. Governor Kim Reynolds looking over the floods from above. The flooding part of a wild start to the summer season.