The Advanced Aerospace Threat Identification Program (AATIP)[1] was an unclassified but unpublicized investigatory effort funded by the United States Government to study unidentified flying objects (UFOs) or unexplained aerial phenomena (UAP).[2] The program was first made public on December 16, 2017. The program began in 2007, with funding of $22 million over the five years until the available appropriations were ended in 2012.[3][4][5] The program began in the U.S. Defense Intelligence Agency.[6]
According to the Department of Defense, the AATIP ended in 2012 after five years, however reporting suggested that U.S. government programs to investigate UFOs continued.[7] This was confirmed in June 2020 with the acknowledgement of a similar military program, the unclassified but previously unreported Unidentified Aerial Phenomenon Task Force.[8]