law enforcement officer
(3) “law enforcement officer” means an employee who— (A) is a law enforcement officer within the meaning of section 8331(20) or 8401(17); (B) in the case of an employee who holds a supervisory or administrative position and is subject to subchapter III of chapter 83, but who does not qualify to be considered a law enforcement officer within the meaning of section 8331(20), would so qualify if such employee had transferred directly to such position after serving as a law enforcement officer within the meaning of such section; (C) in the case of an employee who holds a supervisory or administrative position and is subject to chapter 84, but who does not qualify to be considered a law enforcement officer within the meaning of section 8401(17), would so qualify if such employee had transferred directly to such position after performing duties described in section 8401(17)(A) and (B) for at least 3 years; and (D) in the case of an employee who is not subject to subchapter III of chapter 83 or chapter 84— (i) holds a position that the Office of Personnel Management determines would satisfy subparagraph (A), (B), or (C) if the employee were subject to subchapter III of chapter 83 or chapter 84; or (ii) is a special agent in the Diplomatic Security Service.