U.S. Air Force Analysis of Flying Objects in the United States, 101-172

A wartime-era Air Force checklist for UFO incidents offers a rare look at how investigators were actually trained to document these events — what questions to ask, what details to capture, and who to talk to. The accompanying witness statements and narrative reports turn this into something more than bureaucratic process: it's a window into how seriously the early military apparatus was taking the problem, case by case.