At 70 miles per hour, this Kansas City bound Piggybacker will disappear across the Oklahoma prairie as quickly as the sky darkens in the vivid sunset.  You probably have never heard of Avard,  but to a railfan, this is a “hot spot.”   This line in northwestern Oklahoma was the Santa Fe mainline.  Now as the Burlington Northern Santa Fe’s “Transcon,” these rails see more action than ever, over a hundred trains a day.  Gary Ostlund