Stock Photo - Doppler on Wheels driver Herb Stein ties down the radar dish near Des Moines, Iowa, June 5, 2010, after a storm chase Herb and the DOW are participating in Project Vortex 2, a two year science mission to study tornadoes

Stock Photo: Doppler on Wheels driver Herb Stein ties down the radar dish near Des Moines, Iowa, June 5, 2010, after a storm chase  Herb and the DOW are participating in.

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