Tehran F-4 UFO incident (1976).

The Tehran F-4 incident of 19 September 1976 involved two Imperial Iranian Air Force F-4 Phantom jets scrambled to intercept a brilliant maneuvering object over Tehran; both crews reported temporary loss of instruments and weapons systems as they closed in. It is documented in a US Defense Intelligence Agency report later declassified, which described it as a classic case with multiple corroborating witnesses. It matters as one of the most credible military radar-visual cases; the cause remains officially unexplained, with skeptics citing a bright planet plus instrument issues.