Huntsman, a member of Chevron's board of directors, shook the hands of the children in the class and talked to some of them about their career plans, including Grace Lugo, who came to the U.S. from Mexico just over a year ago."A doctor," Grace said, describing the type of person she wants to become as someone "helping the people." "That's the best kind," Huntsman said, later making a point of showing her a microscope pulled from the boxes of equipment. "You're going to have to get used to using this," he said, as Grace beamed.