convicted of a felony offense. (2) For purposes of paragraph (1), the term felony offense means any felony offense committed by the individual that is related to the performance of any position within the service occupied by such individual. (b) An individual who is an at-will employee (as determined under section 2 of the Promote Accountability and Government Efficiency Act) may not be paid an annuity on the basis of the service of the individual which is creditable toward the annuity if the individual was finally convicted of a felony offense— (1) when such individual was performing creditable service (as that term is defined in section 8332 or 8411)