1 of 25: This frame grab from video shows lightning inside a massive tornado on Sunday, May 22, 2011, outside Joplin, Mo. The tornado tore a 6-mile path across southwestern Missouri killing at least 89 people as it slammed into the city of Joplin, ripping into a hospital, crushing cars like soda cans and leaving a forest of splintered tree trunks behind where entire neighborhoods once stood. (AP Photo/tornadovideo.net) (AP Photo/ SS JHC**NY**)

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