It's that time of year again where the Union Pacific Railroad and The Denver Post run the annual Cheyenne Frontier Days passenger special between Denver, Colorado and Cheyenne, Wyoming. Union Pacific's E9's Nos. 951, 963B, 949 and DDA40X No. 6936 do the honors. The train can be seen here rounding the curve just north of Platteville along US-HWY 85.
