employee
(2) the term “employee” means an employee of the National Security Agency, serving under an appointment without time limitation, who has been currently employed by the National Security Agency for a continuous period of at least 12 months prior to the effective date of the program established under subsection (c), except that such term does not include— (A) a reemployed annuitant under subchapter III of chapter 83 or chapter 84 of title 5 or another retirement system for employees of the Government; or (B) an employee having a disability on the basis of which such employee is or would be eligible for disability retirement under any of the retirement systems referred to in subparagraph (A).