; (B) be distinguished individuals of high national professional reputation in their respective fields who are capable of exercising the independent and objective judgment necessary to fulfill their role in ensuring and facilitating the review, transmission to the public, and public disclosure of files related to civil rights cold cases and who possess an appreciation of the value of such material to the public, scholars, and government; and (C) include at least 1 professional historian and 1 attorney. (c) Security clearances All Review Board nominees shall be processed for the necessary security clearances in an accelerated manner by the appropriate Federal agencies and subject to the standard procedures for granting such clearances. (d) Vacancy A vacancy on the Review Board shall be filled in the same manner as the original appointment within 60 days of the occurrence of the vacancy. (e) Chairperson The members of the Review Board shall elect 1 of the members as chairperson. (f) Removal of review board member (1) In general No member of the Review Board shall be removed from office, other than— (A) by impeachment and conviction