5 December 1956 – A Northrop XSM-62 Snark, 53-8172, N-69D test model, fitted with a new 24-hour stellar inertial guidance system, launches from Cape Canaveral Missile Test Annex, Florida. It wanders off-course, ignores destruct command, disappears over Brazil. It is found by a farmer in January 1983. The Day They Lost the Snark   By J.