law enforcement officer
(17) the term “law enforcement officer” means— (A) an employee, the duties of whose position— (i) are primarily— (I) the investigation, apprehension, or detention of individuals suspected or convicted of offenses against the criminal laws of the United States, or (II) the protection of officials of the United States against threats to personal safety; and (ii) are sufficiently rigorous that employment opportunities should be limited to young and physically vigorous individuals, as determined by the Director considering the recommendations of the employing agency; (B) an employee of the Department of the Interior or the Department of the Treasury (excluding any employee under subparagraph (A)) who occupies a position that, but for the enactment of the Federal Employees’ Retirement System Act of 1986, would be subject to the District of Columbia Police and Firefighters’ Retirement System, as determined by the Secretary of the Interior or the Secretary of the Treasury, as appropriate; (C) an employee who is transferred directly to a supervisory or administrative position after performing duties described in subparagraph (A) and (B) for at least 3 years; and (D) an employee— (i) of the Bureau of Prisons or Federal Prison Industries, Incorporated; (ii) of the Public Health Service assigned to the field service of the Bureau of Prisons or of the Federal Prison Industries, Incorporated; or (iii) in the field service at Army or Navy disciplinary barracks or at any other confinement and rehabilitation facility operated by any of the armed forces; whose duties in connection with individuals in detention suspected or convicted of offenses against the criminal laws of the United States or of the District of Columbia or offenses against the punitive articles of the Uniform Code of Military Justice (chapter 47 of title 10) require frequent direct contact with these individuals in their detention and are sufficiently rigorous that employment opportunities should be limited to young and physically vigorous individuals, as determined by the head of the employing agency;