In 2267, Doctor Leonard McCoy once exclaimed that he was "a doctor and not an escalator" when Eleen refused to be helped (and thereby touched) to climb a steep hill by anybody else besides the doctor. (TOS: "Friday's Child" ) In the 2270s, escalators were in use at Starfleet Headquarters in San Francisco. (Star Trek: The Motion Picture) The subterranean city built by the Caretaker for the Ocampa on their homeworld was equipped with numerous escalators. (VOY: "Caretaker")