As Union Pacific's special moving the Big Boy from southern California to Wyoming nears the end of its first day, a father and his young daughter wave at the train as his other daughter records the moment on her cell phone. Hundreds of railfans and additional hundreds of curious non-fans witnessed this unusual move between West Colton Yard and Yermo, the first leg of eight days of slow and steady rolling eastward. In about a mile, the train will diverge off BNSF Railway trackage and be back on Union Pacific rails.