; (ii) while on duty in the position designated under subsection (a), becomes ill or is injured as a direct result of the performance of such duties before the date on which the employee becomes entitled to an annuity under section 233 of this Act or section 8412(d)(1) of title 5, United States Code; (iii) because of the illness or injury described in clause (ii), is permanently unable to render useful and efficient service in the employee’s covered position, as determined by the Director; and (iv) is appointed to a position in the civil service that is not a covered position but is within the Agency; and (B) the term covered position means a position as— (i) a law enforcement officer described in section 8331(20) or 8401(17) of title 5, United States Code; (ii) a customs and border protection officer described in section 8331(31) or 8401(36) of title 5, United States Code; (iii) a firefighter described in section 8331(21) or 8401(14) of title 5, United States Code; (iv) an air traffic controller described in section 8331(30) or 8401(35) of title 5, United States Code; (v) a nuclear materials courier described in section 8331(27) or 8401(33) of title 5, United States Code; (vi) a member of the United States Capitol Police; (vii) a member of the Supreme Court Police; (viii) an affected employee