Historic Big Boy steam locomotive draws crowds on America 250 tour

Union Pacific's Big Boy No. 4014, the world's largest operating steam locomotive, is making its first East Coast tour as part of America 250 celebrations. Rail fans traveled from multiple states to see the historic engine in Illinois.

Union Pacific's legendary Big Boy No. 4014, the world's largest operating steam locomotive, is making its first-ever East Coast tour as part of America 250 celebrations. Fox News joined a whistle stop in Illinois, where rail fans traveled from multiple states to see the historic steam engine before it continues toward Philadelphia.