UP E-units lead a UP inspection special on the Western Pacific at Reno Junction in March of 1980. Executives from UP were inspecting the WP in anticipation of the merger that ultimately happened in 1982, when UP pulled off what the SP and ATSF previously couldn't do twenty years earlier. In 1961, SP had moved on WP first, making a major stock purchase. The Western Pacific mainline paralleled the SP almost the entirety of it's length, which would have given SP a stranglehold on traffic. Purely as a defensive tactic, to protect its Inside Gateway traffic interchanged with WP, ATSF also moved on WP and made a comparable stock purchase. Great Northern, who was also an interchange partner with WP, made a 10% stock purchase as well, and lobbied hard for the ICC to decline both merger proposals. Ultimately, the ICC agreed with GN, and ruled that WP should remain independent and ordered SP and ATSF to sell their shares in WP. The WP was pretty healthy through the '70s, interchanging lots of traffic with ATSF and Burlington Northern and making huge strides in intermodal service, but management wasn't plowing the money back into the infrastructure. The WP suffered numerous expensive derailments between Portola and Oroville in 1979. The problem was so bad the FRA sent out the T-6 test car to run up and down the line, and found multiple curves over 3 degrees where the track was out of gauge by 1/2 inch or more. The 1980 recession hit the WP hard, and pretty much killed off the major income source, cars out of the Ford factory at Milpitas, and Union Pacific moved in for the kill.