Its not the right scale (I dont have the HO catalog) but if you want a local touch you can add one of these. I am sure that this line is also in HO.
EMD SD90/43MAC - Standard DC -- Indiana Rail Road #9002 (red, white) (381-1765618) -- Walthers Model Railroading
EMD SD90/43MAC - Standard DC -- Indiana Rail Road #9002 (red, white) (381-1765618) -- Walthers Model Railroading