Satellite images show before and after destruction caused by tornadoes on Mayfield, KY

At least 100 people were feared dead in Kentucky after a swarm of tornadoes tore a 200-mile path through the U.S. Midwest and South, demolishing homes, leveling businesses and setting off a scramble to find survivors beneath the rubble, officials said Saturday. Before and after satellite images showed the devastation caused by tornadoes in downtown Mayfield, Ky.