(1) Except as provided in paragraph (2), this section shall apply with respect to persons who are selected by the Secretary for employment as professors, instructors, and lecturers at a
school of the Air University after February 27, 1990.
(2) This section shall not apply with respect to professors, instructors, and lecturers employed at a
school of the Air University if the duration of the principal course of instruction offered at that
school is less than 10 months.