the history of the US government's involvement in the study of unidentified aerial phenomena (UAP), commonly known as UFOs. The sources highlight a long-standing pattern of secrecy and denial surrounding the topic, particularly in the period between the end of Project Blue Book in 1969 and the establishment of the Advanced Aerospace Threat Identification Program (AATIP) in 2007. The sources also examine the various government agencies, private corporations, and individuals who have been involved in the research, including the role of Robert Bigelow and his company, Bigelow Aerospace. The sources suggest that the government has sought to control information related to UFOs, and that the recent wave of public interest in the topic is a result of leaks and the efforts of individuals who believe that the truth should be disclosed.