Late in the afternoon, Union Pacific train LOG16R 14, technically the 7400 Zone Switcher out of Mead, but popularly called the Vopak Switcher, navigates the S-curve at the north end of the Reyes Spur in Compton. UPY 2759, on the head-end, is an NRE-built 3GS21B "GenSet" 2759, built in August 2007. (Compton, California – February 19, 2014)