In July of 2013, the Union Pacific Railroad reacquired Big Boy steam locomotive number 4014 from the Rail Giants Train Museum at the Pomona Fairplex with the intention of restoring number 4014 to operating condition. Once in working order, the locomotive will become part of the Union Pacific's Steam Program. Built in 1941 by the American Locomotive works, the Big Boy is considered to be the biggest steam locomotive ever built.

Come along as we follow the Big Boy on the second leg of its journey to its new home in Cheyenne, Wyoming where it will undergo restoration to operating condition. This video includes a brief introduction followed by video coverage of UP 4014's journey over Cajon Pass as it bids farewell to California on April 28th, 2014.