SCRANTON, LACKAWANNA COUNTY (WBRE/WYOU) — The world’s largest operating steam locomotive, the Union Pacific Big Boy 4014, is making a stop in Scranton as it travels east for America’s 250th birthday. It’s a more than 2,000-mile journey from Cheyenne, Wyoming, and the train’s arrival in Northeastern Pennsylvania is a spectacle many, especially railroad buffs, wouldn’t miss. “I’m going to be going crazy about it.