Captain William Davidson and Lieutenant Frank Brown were special agents of the 4th Air Force Counter-Intelligence Command. Based out of Hamilton Field, California, the two men interviewed many UFO witnesses in the Pacific Northwest as part of the military's attempt to document and identify the strange aircraft being reported.

The officers were described as polite, friendly, and professional when they met with Kenneth Arnold in Idaho. In Arnold's own words, "they said, frankly and openly, they didn't know what the flying saucers were. They had never seen one... [but] they were practically bug-eyed from watching the sky themselves." Before leaving Idaho, the two men asked Arnold to contact them if he learned anything more. 

​

On July 31st, 1947, Arnold contacted the officers to relay the UFO report Harold Dahl and Fred Crisman had made. Late that afternoon, the officers arrived at the hotel to hear the story and inspect the physical evidence themselves. This was the last UFO report the officers ever took; their plane suffered a catastrophic malfunction while returning to Hamilton Field.

​

​