Naval air base, Corpus Christi, Texas. A top-notch mechanic, Mary Josephine Farley expertly rebuilds airplane engines. Although she's only twenty-years-old, she has a private pilot's license and has made several cross country flights. She ranked highest of all competitors on her civil service examination with a grade of eighty-nine. Since her arrival at the Corpus Christi Air Base four and one half months ago, she has been made a crew leader