342_HS1-416511228：319.1 飞碟（1949年）
342_HS1-416511228_319.1 Flying Discs 1949
这份文件修正了之前的理解，即美国空军最初认真调查了"飞碟"报告，但公关行动旨在淡化公众兴趣。该文件及同一文件中的其他材料表明，美国情报界不仅在早期认真对待这些报告，而且对此现象及其对美国国家安全的潜在影响存在明显担忧。
查看英文原文
This file primarily contains incident reports on Unidentified Flying Objects (UFOs) written in compliance with the 1948 Flight Service Regulation (FSR) 200-4. The incidents were witnessed by military sources, as well as by some Civilian Aviation Authority (CAA) ones. The reports typically include information such as dates, locations, weather, and altitude, plus detailed descriptions of appearance and movement. Some messages from the Military Air Transport Service (MATS) and Army Airways Communications System (AACS) are also included, as well as additional military intelligence reports, several diagrams, and a report from a weather station in Japan.
原始文件托管于美国战争部服务器，链接来自 war.gov。