Omaha resident Lindsey Carothers, left, hugs a friend Sunday, April 10, 2011, in front of her childhood home, in Mapleton, Iowa, which suffered heavy damage in a large tornado.

Omaha resident Lindsey Carothers, left, hugs a friend Sunday, April 10, 2011, in front of her childhood home, in Mapleton, Iowa, which suffered heavy damage in a large tornado that flattened a grain elevator and destroyed homes and buildings on its weekend rampage through this small western Iowa tow

A Werner Enterprises truck travels on Interstate 680 west of Omaha, Neb., Wednesday, May 13, 2009. Werner Enterprises Inc., said it trimmed an additional 4 percent of its Omaha, Neb.-based fleet of over 8,000 trucks in the first quarter, as slow consumer spending and stalled manufacturing activity t

job seekers fill out job applications at a teen job fair held at the Swanson Public Library in Omaha, Neb.

In this March 21, 2011 photo, job seekers fill out job applications at a teen job fair held at the Swanson Public Library in Omaha, Neb. Fewer people applied for unemployment benefits last week, a sign that layoffs are dropping and companies may be stepping up hiring.

File photo of Billionaire financier and Berkshire Hathaway Chief Executive Warren Buffett eating ice cream during the Berkshire Hathaway Annual Shareholders meeting in Omaha

Billionaire financier and Berkshire Hathaway Chief Executive Warren Buffett eats ice cream during the Berkshire Hathaway Annual Shareholders meeting in Omaha, Nebraska in this May 2, 2009 file photo. Warren Buffett is looking for acquisitions as an outlet to deploy his $38 billion cash pile, the leg