June 5;1964 Pajasblancas (Argentina) — 1964

A 42-year-old doctor and his wife were 30 km away from the airport when an intensely bright object appeared on the road ahead. They drove very close to it and saw three men dressed in gray, one of whom told him in Spanish that “they had a mission on Earth.” (Humanoids 39)

Source: Passport to Magonia
Case: 610