Mutual of Omaha employees clean their vehicles of snow before leaving on their drive home during the evening commute Wednesday Dec. 20, 2012, in Omaha Neb. A storm that has dumped more than a foot of snow in the Rocky Mountains is heading east and is forecast to bring the first major winter storm of the season to the central plains and Midwest. (AP Photo/The World-Herald, Matt Miller)

Photo by: Matt Miller

Mutual of Omaha employees clean their vehicles of snow before leaving on their drive home during the evening commute Wednesday Dec. 20, 2012, in Omaha Neb. A storm that has dumped more than a foot of snow in the Rocky Mountains is heading east and is forecast to bring the first major winter storm of the season to the central plains and Midwest. (AP Photo/The World-Herald, Matt Miller)