Tornado leaves devastating damage in Greenfield, Iowa CNN 0 93 05.24 04:32 https://www.youtube.com/watch?v=Xs6aU3kfheQ + 11 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 11 Tornado leaves devastating damage in Greenfield, Iowa