World's largest operating steam locomotive stopped at Union Station on February 9, 2004 on its way back from the Superbowl in Houston. Read about the engine at http://www.uprr.com/aboutup/excurs/up3985.shtml

Union Pacific Challenger	Union Pacific Challenger	Union Pacific Challenger
Union Pacific Challenger	Union Pacific Challenger	Union Pacific Challenger
Union Pacific Challenger	Union Pacific Challenger