Union Pacific Challenger 3985 leaves Russellville, Arkansas on its way home from Houston, TX following the SuperBowl in January, 2004.
Union Pacific Challenger No. 3985 was designed by Union Pacific and built in 1943 by the American Locomotive Company. It is one of 105 Challengers built for Union Pacific between 1936 and 1943 and is the only operating engine of its class in the world today – the largest and most powerful operating steam locomotive.
UP Challenger 3985