World's biggest steam engine 'Big Boy' back in action HD

One of the world’s largest steam trains has returned to the railway tracks in Wyoming, following a five-year refurbishment. Big Boy N0. 4014 is back on the tracks. Only 25 of the 132-foot-long machines were ever constructed, designed for hauling freight over mountainous terrain in Wyoming and Utah. The train company Union Pacific took on the challenge of refurbishment in 2013, towing one of the old locomotives from a museum in Pomona, California, to its Steam Shop in Cheyenne, Wyoming. #BigBoy #WorldsBiggest #Trains Report by Lance Chinnian.