Just look at how much UFO mythology and science fiction got started as the root cause for "the investigations" of these events. I always have had strong suspicions whenever someone like Arnold sees the "skipping saucers", and then he is soon after investigating to write an article(s) about another UFO sighting with military involvement too! So, Palmer was a publisher of this UFO genre too as noted below. That region of the USA is also where major aircraft are manufactured, so connecting the dots to the story telling it certainly seems man made to appear "real".
[Obtained elsewhere online...]
Palmer contacted Arnold and asked him to investigate the incident for the story Arnold was writing for one of Palmer's publications (the FBI report states Palmer was the editor of the magazines Venture and Fantacy at this time, although both Venture Science Fiction Magazine and The Magazine of Fantasy and Science Fiction first appeared long after the incident. Palmer inaugurated the first issue of Fate magazine in January, 1948 with a cover featuring flying disks and the article he paid Kenneth Arnold to write.
Arnold flew from Boise, Idaho, to Tacoma and met with Crisman, Dahl and at least three military intelligence officers at the Winthrop Hotel there. During the meetings over several days, an unknown person (the FBI agent who wrote up the main report on the incident believed Crisman was the most likely suspect) began leaking details of the UFO sighting at Maury Island, the meeting in the hotel room and details of the conversation there to reporters at the Tacoma Times and at United Press, the latter reporter also working for Tacoma News Tribune. The anonymous caller also contacted the Seattle Post-Intelligencer and the Boise Statesman.
The two United States Army Air Corps investigating officers who arrived at Arnold's request, Captain William L. Davidson and Lietuenant Frank M. Brown of Army A-2 Intelligence, decided to fly back to Hamilton Field the same day they arrived in Tacoma after interviewing Crisman in the hotel room. Dahl had decided to leave, citing possible danger to himself if the story got out, presumably because of the warning he received from the man in black previously.