DES MOINES, IA - AUGUST 07: Rain drops drip from a vintage John Deere tractor on display at the Iowa State Fair on August 7, 2014 in Des Moines, Iowa. The fair opened today and will run through August 17, 2014. (Photo by Scott Olson/Getty Images)
DES MOINES, IA - AUGUST 07: Rain drops drip from a vintage John Deere tractor on display at the Iowa State Fair on August 7, 2014 in Des Moines, Iowa. The fair opened today and will run through August 17, 2014. (Photo by Scott Olson/Getty Images)