Signal vs. Cover

The U.S. government has a documented history of using "UFO" as a convenient explanation for classified technology — allowing witnesses to misidentify advanced programs rather than correcting the record. The analytic question is whether all UAP evidence can be explained this way, or whether a residual signal survives every conventional filter. We construct six diagnostic tests to separate signal from cover. Applied to the evidence chain, five of six tests return results inconsistent with the cover-story-only hypothesis. The sixth is inconclusive.