BNSF Railway ES44DC 7526, Dash 9-44CW 4926, Dash 9-44CW 4623 and ES44DC 7529 grind upgrade with an intermodal train, heading from Fresno CA to Chicago IL, and is about to enter Tunnel 2 as they cross the Tehachapi Mountains. (Caliente, California – November 7, 2009)