I'm reading Trance Formation of America by Cathy O'Brien and there's a passage in there about Evergreen (written by Mark PHillips, the guy who helped free her from being an MKUltra slave.)
He's speaking about his past working in Alaska with this guy - "This rigid fellow had a long, colorful history working for other CIA controlled airlines. Among other jobs, he had held top executive positions of authority with the infamous air support section of the U.S.
Forestry Service, Air America, and Evergreen (CIA) carriers