I heard that the train symbol was "OCS". It's already on the return trip, as the CN 3309 "wafer logo" was reported eastbound Earlville, IA at 17:22 on the Heritage Units website. Doesn't seem like they spent much time inspecting the IANR. From what I understand, they want the train back in Homewood by midnight. I don't know if the eastbound manifest will put a kink in those plans (or the other way around).
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Grateful Fred
Sugar Ridge Tower MP40 CC&P
Fred Hilgenberg