In 1947, Northwest flew the Great Circle Route over the Pacific Ocean to Japan, China, Korea and the Philippines. It adopted the name “Northwest Orient” for advertising purposes.

Dan Cooper, a middle-aged white man, hijacked Northwest Orient Airlines Flight 305 on November 24, 1971 on a flight between Portland, Oregon, and Seattle, Washington.

On the next Expedition Unknown, Josh Gates searches Lake Michigan for clues and possibly the answer to what happened in 1950 on a doomed flight.