The standard helper set of the day - a pair of SD40-2s - are coupled ahead of the road power - SD60 No. 6853 and Dash8-40CW No. 6140 - on 140 car Baltimore to Conway symbol BAPI8 on a fall afternoon. Another pair of SD40s brought up the rear of the train, which is threading out of Scotch Run curve into a stretch of tangent before Horseshoe Curve, a mile ahead. Fuji Sensia