Union Pacific "Big Boy" #4014 departs from the Rochelle Railroad Park in Illinois on September 9, 2024. #CheeseheadMotors catches the world's largest operational steam locomotive at a crossing east of DeKalb, Illinois as the big engine heads east toward Chicago en route to Watseka, IL as part of the Union Pacific Heartland Tour #4014 #bigboy #unionpacific #steamlocomotive #railfans #trains #railfan #up4014

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