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Train WCHOY (Extra 8303 East) is passing the east end of the siding at Garnet on November 28, 1977. The engineer is transitioning from dynamic braking to light power to stretch the slack out before applying lots of power to get the train up to track speed for the run to Yuma. In the background you can see the water tank and Interstate 10.
Cut in mid-train is a set of radio controlled helpers. The lead unit on the train and engine 8353 were purchased during the summer of 1974. Units in the 8300 series were equipped to be masters and units in the 8350 series were set up as slaves. Initial tests on the steep grades of Tehachapi were not very successful due to tunnels and mountains that blocked radio transmissions. These units soon found a home of the Sunset Route which had no tunnels but enough ups and downs to make radio helpers quite useful. Disk 55