800km east-northeast of Christmas Island, Operation Dominic, “Frigate Bird” rocket detonation at 3400m altitude, 600kton; this is the only American test of a ballistic missile with an active nuclear warhead; the missile is launched from the Ethan Allen ship and travels 1890km in space before re-entering the atmosphere; it is a prototype of the W-47 warhead that will be mounted on Polaris submarine missiles.
