Union Pacific 844

Union Pacific 844 is a FEF-3 class 4-8-4 Northern type steam locomotive owned and operated by the Union Pacific Railroad for its heritage fleet. The American Locomotive Company of Schenectady, New York, built it in December 1944. It is one of four surviving FEF series locomotives and the only one in operation. It worked in revenue service until 1959 and was then stored with the rest of the railroad steam fleet. In 1960 railroad leaders kept it for special activities, which became the heritage steam program. It is the only steam locomotive never permanently retired by a North American Class I railroad.