employee
(3) the term “employee” means an employee of a defense agency, serving under an appointment without time limitation, who has been currently employed for a continuous period of at least 12 months, except that such term does not include— (A) a reemployed annuitant under subchapter III of chapter 83, chapter 84, 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).