A safety film produced by the Pennsylvania Railroad in 1955 that discusses fighting fires on locomotives and teaches railroad employees about the type of fires they are likely to face and the equipment that is available to fight the fires. PRR diesel & electric locomotives feature throughout the film including some interesting trackside and in cab film of trains on fire. Many different locomotives of the PRR are seen including GG1’s. The Pennsylvania Railroad (PRR) was an American Class I railroad, founded in 1846. Commonly referred to as the “Pennsy”, the PRR was headquartered in Philadelphia, Pennsylvania. The PRR was the largest railroad by traffic and revenue in the US throughout the first two-thirds of the twentieth century and was at one time the largest publicly traded corporation in the world. At its peak, it controlled about 10000 miles (16000 km) of rail line; in the 1920s it carried about three times the traffic (measured by ton-miles of freight) as other railroads of comparable length, such as Union Pacific or Santa Fe. The only rival was New York Central, which carried around three-quarters of PRR’s ton-miles.