For my 100th post on RP.Net I decided to show my opinion of the best railfan location, Tehachapi Loop. In this view light helpers head WB on the top of the loop. The MKM initials on the lead unit mean it has been assigned to Morrison-Knudsen for maintenance. The second unit is ATSF SF30c # 9526, a rebuilt U36Cu (former #8704 blt. 6-72, reblt. 2-86). Lead unit blt. 5-72.