SOO SD60 no. 6025 in the 1961 era red and white scheme leads an eastbound freight meeting a westbound freight powered by SOO 6052, painted in the candy apple red scheme on double track at Hartland, WI. Soo Line would single track the entire former MILW mainline from Pewaukee, WI to Hastings, MN in the 1990s, replacing it with CTC.