PRLX GP9 4109, an ex-CN unit, is used to switch a Conrad Yelvington operation on a remnant of the old SOU C Line. The unit is usually at the extreme west end of the yard facing east-west. Best shot is in the early AM especially as the sun just clears the trees in the east. Unit is painted black with white lettering. This line diverges from CSX main downtown and runs westward less than a mile into an industrial park.