DIA report — 1976 Tehran F-4 UAP intercept.
official-recordclose_encounterProject Blue Book
Declassified DIA cable (incident 19 Sep 1976): two IIAF F-4 Phantoms scrambled on a radar-visual luminous object over Tehran; both reportedly lost instrumentation/comms + weapons-arming on approach, restored on withdrawal. DIA graded the report 'outstanding' for UFO study.
One of the strongest official-record instrumented cases: radar + visual + electronic/weapons-systems interference on two aircraft, distributed to the White House, State, JCS, NSA, CIA. Genuinely anomalous per the DIA analyst's grading. Scanned PDF on The Black Vault (image/OCR). Represents the 'instrumented multi-sensor' evidence class, not proof of NHI.