Union Pacific Challenger [SEP] manufacturer
Union Pacific Challenger
The Union Pacific Challengers are a type of simple articulated 4-6-6-4 steam locomotive built by American Locomotive Company from 1936 to 1944 and operated by the Union Pacific Railroad until the late 1950s.
A total of 105 Challengers were built in five classes. They were nearly long and weighed 537 short tons (487 tonnes). They operated over most of the Union Pacific system, primarily in freight service, but a few were assigned to the "Portland Rose" and other passenger trains
Challenger trucks
Challenger Manufacturing Ltd. was a British Columbia-based Canadian manufacturer of heavy trucks, that built both highway and off road trucks, particularly for the logging industry, under the Challenger, "Custom Built for Heavy Industry", brand.
Challenger was founded by John Casanave in Port Alberni, Vancouver Island in 1987. They began to rebuild Hayes, Pacific and Kenworth heavy trucks, and later moved to manufacture sturdy, easy to maintain trucks using OEM components, like Mack or Cummins engines. 
Challenger was active