A quartet of General Electric locomotives leads BNSF Railway train Z-CHISBD6-17L (Priority UPS-LTL Intermodal; Chicago IL to San Bernardino CA) passes through Cajon, in the heart of southern California's Cajon Pass, on December 20th, 2014. Power for this train is ES44C4 8194, ES44DC 7896, ES44C4 6555 and ES44DC 7658.