FILE - A Union Pacific train engine sits in a rail yard on Wednesday, Sept. 14, 2022, in Commerce, Calif. Union Pacific reports earnings on Thursday, April 20, 2023. The head of the union that represents track maintenance workers says Union Pacific is jeopardizing safety by delaying nearly 1,200 planned projects until next year and laying off more than 1,000 workers. (AP Photo/Ashley Landis, File)
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