Tornadoes leave Trail of destruction in midwest.
At least three people have been killed and 40 others injured after 15 tornadoes swept through seven states.
WATCH: Tornadoes flatten homes in Nebraska, leave trail of damage in Iowa | OneindiaOn Friday, a tornado barreled through suburban Omaha, Nebraska, leaving a trail of destruction in its wake. The powerful storm inflicted damage on hundreds of homes and structures as it ripped through..