A realistic "Joke" from anthropologist

Csordas (from "Healing and the human condition"):
NASA and the old man: When NASA was preparing the Apollo project, they did some astronaut training on the Navajo Indian reservation. One day, a Navajo elder and his son were herding sheep and came across the space crew. The old man, who only spoke Navajo, asked a quesiton, which his son translated" "What are the guys in the big suit doing?" A member of the crew said they were preparing for their trip to the moon. The old man got really excited and asked if he could send a message to the moon with the astronaust. Recognizing a promotional opportunity, the NASA people found a tape recorder. After the old man recorded his message, they asked the son to translate. He refused. So they brought the tape to the reservation, where the tribal leaders listened and laughed, but refused to translation the elder's message to the moon. Finally, NASA called in an official government translator. He reported that the moon message said, "Watch out for these guys, they've come to steal your land."