On November 3, 1962, a Nike Hercules anti-aircraft missile with a W-31 nuclear warhead, with a yield of about 10 kt, was launched from Johnston Atoll and exploded at 21:30 at an altitude of 21 km. Posting in CHAT: Russia7 missiles with measuring instruments were also launched. This was the last atmospheric nuclear test by the United States.High Altitude Nuclear Explosion (1962)Challenge: TightropeTime: 00:00, November 4, 1962Location: 2 km southwest of at. JohnstonType of explosion: high altitude, 21 kmPower: