Pacific Highway (United States) from the Hudson's Bay Company were the first non-Native Americans to use the route of the future Pacific Highway to move between today's Washington State and "Alta California." During the second half of the 19th Century, mule trains, stagecoaches, and the Central Pacific Railroad also followed the route of the Siskiyou Trail. In the early 20th century, around 1910, entrepreneur Sam Hill lobbied the governments of Washington and Oregon to build automobile roads along the path of the Siskiyou Trail, with the ultimate goal of building a paved auto route from Canada to Mexico. Pacific Highway (United States) Pacific Highway
Seaboard World Airlines connect McChord Air Force Base, Washington with Cam Ranh Bay, Vietnam. In 1968, one of these flights operating as Seaboard World Airlines Flight 253A was forced to land in the Soviet Union with 214 American troops on board. On 30 April 1969, a Seaboard World Airlines DC-8 with 219 passengers and 13 crewmembers landed by mistake at Marble Mountain Air Facility, when it had actually been cleared to land at the nearby Da Nang Air Base. After fuel and passengers were offloaded, the plane was towed to the north overrun and departed five hours after the landing incident. Seaboard was