This is a picture of 3015, 2003, and 1503 leading the Northbound passenger train across Riley Creek in September 1985. The "termination dust" has come to the surrounding mountain tops symbolic of the end of the "F-unit" era in Alaska. While the scenery is still incredible, the ARR lost something when it retired the F's (except for the 1503) during the fall of 1985.
 

Photo courtesy of Jason Kuehn