When NASA was preparing for the Apollo Moon Project, they did some training
on a Navajo Indian reservation.  One day, a Navajo elder and his son were herding
sheep and came across the space crew.  The old man, who spoke only Navajo, asked
a question which his son translated:  "What are these guys in the big suits doing?"

A member of the crew said they were practicing for their trip to the moon.
The old man got all excited and asked if he could send a message to the moon
with the astronauts.

Recognizing a promotional opportunity for the spin-doctors, the NASA folks
found a tape recorder.  After the old man recorded his message, they asked the
son to translate it, but he refused.  So the NASA reps brought the tape to the
reservation where the rest of the tribe listened and laughed but refused to
translate the elder's message to the moon.

Finally, the NASA crew called in an official government translator.
He reported that the moon message said,

"Watch out for these guys, they have come to steal your land."