A newly revealed Department of Defense review confirmed what conspiracy theorists had long alleged: the US military deliberately spread UFO rumors, staged fake photos, and conducted false briefings to create a UFO mythology that would serve as cover for classified weapons programs. During the Cold War, when civilians spotted experimental aircraft like the U-2 and SR-71, intelligence agencies encouraged UFO explanations rather than risk exposing the real programs. This deliberate disinformation campaign has been confirmed as a major source of UFO conspiracy theories. Ironically, the confirmation that the government used UFO disinformation as cover raises the question of what else might be hidden beneath the disinformation.