The KA2N Gorgon IIA – also designated KU2N, CTV-4, and CTV-N-4 – was an air-to-air missile developed by the United States Navy near the end of World War II.

[1] The Gorgon IIA, the baseline design of the family, was of canard configuration, a conventional high-mounted monoplane wing providing lift; the structure was largely of laminated wood,[2] while propulsion was by a Reaction Motors CML2N liquid-fuel rocket,[1] fueled with monoethylamine and nitric acid.

[3] Intended for use intercepting bombers or transport aircraft, the Gorgon IIA was said to be the first American guided missile to be powered by a liquid-fueled rocket.

[2] However, initial flight tests of the system, beginning as unpowered glides early in 1945 and proceeding to fully powered guided trials in March 1945, showed that the guidance system was impractical; the closing speeds of the missile and its target were too great for the Gorgon IIA's limited maneuverability to allow the missile's operator to correctly steer the weapon.

[1] Despite this difficulty, the Gorgon IIA was the first jet- or rocket-powered radio-controlled aircraft to successfully fly in the United States.