; (B) that sufficiently represent all relevant operational or academic disciplines described in subparagraph (A); (C) with expertise on human factors but whose experience and training are not in aviation and who have not previously been engaged in work related to the FAA or the aviation industry; (D) that are representatives of pilot labor organizations and certificated mechanic labor organizations; (E) that are employees of the FAA that have expertise in safety; and (F) that are employees of other Federal agencies with expertise on human factors. (2) Number of members In appointing members under paragraph (1), the Administrator shall ensure that— (A) at least half of the members appointed have expertise in aviation; (B) at least one member appointed represents an exclusive bargaining representative of air traffic controllers certified under section 7111 of title 5, United States Code; and (C) 3 members are employees of the FAA and 1 member is an employee of the National Transportation Safety Board. (3) Voting The members described in paragraph (2)(C) shall be non-voting members of the Task Force. (c) Duration (1) In general Members of the Task Force shall be appointed for the duration of the Task Force. (2) Length of existence (A) In general The Task Force shall have an initial duration of 2 years. (B) Option The Administrator may extend the duration of the Task Force for an additional period of up to 2 years. (d) Duties In coordination with the Research, Engineering, and Development Advisory Committee, the Task Force shall— (1) not later than the date on which the duration of the Task Force expires under subsection (c), produce a written report in which the Task Force— (A) to the greatest extent possible, identifies the most significant human factors and the relative contribution of such factors to aviation safety risk; (B) identifies new research priorities for research in human factors in aviation safety