An eastbound Rio Grande freight climbs the steep 3-percent grade of Tennessee Pass at Mitchell on a July 1984 morning. A total of 18,600 horsepower of EMD locomotives is clawing at the rails with this manned mid-train helper set; behind GP40 No. 3083 is a GP40-2, a SD40T-2, a SD45, and two more SD40T-2s. Combined with the 20,850 h.p. on the head end, this freight required almost 40,000 h.p. to climb the pass!