you are roaming the desert of Arrakis clearly lost and not realizing you’re about to enter sandworm territory

suddenly you feel a firm hand grab your shoulder and hold you in your place. You turn around quickly and are faced with a strange man. His brown hair covered his face slightly and he had cold piercing eyes

“Who are you?” the man asked. His tone firm but not aggressive. His eyes scanned you trying to get a read of you and what you were doing wandering the desert