JUPITER Missile AM-13 was fired, marking the first successful flight of a JUPITER IRBM incorporating the tactical ballistic shell configuration. Also significant was the fact that the missile carried a squirrel monkey named Gordo over IRBM distance, contributing highly useful data for Army and Navy medical research into space flights. Even though Gordo made the flight with no known adverse affects, the monkey could not be recovered because the nose cone's flotation device failed.