tank locomotive, meaning that it carries its fuel oil and water in tanks on the locomotive rather than in a separate tender, as does the 119. It has six relatively small driving wheels and large cylinders, making it extremely powerful for its size and is also known for its European-style high-pitched whistle. A two-wheel trailing truck supports the firebox and cab. Generating tractive effort of 10,600 pounds it has almost twice the pulling power of 119, and typically operates with a train consisting of six open-air coaches and a caboose. The caboose has had its lettering, data, and logo removed. Riva began its long career in 1890 when it was turned out by the Krauss Works of Linz, Austria as serial number 2360. Its first owner was the M.A.R. (Mori–Arco–Riva del Garda) Railway in northern Italian region of Trentino-South Tyrol, where it served as number 2 alongside two identical sister engines, "Arco" and "Lago di Garda". The railway was closed when Italy entered the World War I in 1915. The railway was on the front line and then sustained heavy damage, while "Riva" was sent to work on the Heeresfeldbahn (field military railways) in the Eastern front. From 1918 to 1941 it served an industrial railway in Stryj, Poland. World War II brought another stint in military duty before the engine finally ended up on the State Railways of Romania (CFR) as number 395–104. "Riva" operated on the CFR's Alba Julia–Zlatna line until 1968, when it was finally retired and sold to Plasser & Theurer, an Austria-based builder of track maintenance machinery. An American representative of Plasser & Theurer became aware of the Omaha Zoo's search for a second locomotive, and in 1974 arrangements were made for "Riva" to be donated to the zoo. Restoration took place in the Union Pacific's Omaha shops. The overhaul consisted of major running gear work, the installation of American air brake equipment, and conversion from coal to oil firing. The locomotive was then painted, and missing parts such as the headlights and bell were replaced. The reborn "Riva" entered service at the zoo in 1976 during the annual Family Night/Members' Day event, and has operated almost every year since. A major multi-year overhaul took place in the early 1990s and another in 2000–2002. During the winter and spring of 2005, the water tanks were replaced and the air tanks (added in 1976) were moved