A set of hump power crests the East Hump as it finishes sorting another train at North Platte, Nebraska, on May 4, 2011. An early spring storm moves east of the city and brings out a last few rays of bright sunshine late in the afternoon. All too soon, the three-unit set of EMD six-motors (two SD40-2s and a SD38-2) will drop west and retrieve another train that needs classifying.