Union Pacific’s Big Boy No. 4014 – the iconic, one-million-pound steam locomotive – made a stop in Denver Wednesday morning, and Airtracker7 was overhead. DENVER — Union Pacific’s Big Boy No. 4014 – ...

Union Pacific's Big Boy No. 4014 will depart from Denver Union Station back to the locomotive's home base in Cheyenne, ending the locomotive's "Heartland of America Tour." Big Boy No. 4014 will ...

Those wishing to see Big Boy No. 4014, the world’s largest operating steam locomotive, will have their chance Wednesday in Greeley. The popular train will be on public display during its whistle ...