For purposes of this part—

(a) Applicant means any person who requests approval under this part to accept any civil employment (and compensation therefor) from a foreign government and who is: (1) Any retired member of the uniformed services;

(2) Any member of a Reserve component of the Armed Forces; or

(3) Any member of the commissioned Reserve Corps of the Public Health Service.

The term “applicant” also includes persons described in paragraph (a)(1), (2), or (3) of this section, who have already accepted foreign government employment and are requesting approval under this part to continue such employment.

(b) Uniformed services means the Armed Forces, the commissioned Regular and Reserve Corps of the Public Health Service, and the commissioned corps of the National Oceanic and Atmospheric Administration.

(c) Armed Forces means the Army, Navy, Air Force, Marine Corps, and Coast Guard.

(d) Secretary concerned means: (1) The Secretary of the Army, with respect to retired members of the Army and members of the Army Reserve;

(2) The Secretary of the Navy, with respect to retired members of the Navy and the Marine Corps, members of the Navy and Marine Corps Reserves, and retired members of the Coast Guard and members of the Coast Guard Reserve when the Coast Guard is operating as a service in the Navy;

(3) The Secretary of the Air Force, with respect to retired members of the Air Force and members of the Air Force Reserve;

(4) The Secretary of Transportation, with respect to retired members of the Coast Guard and members of the Coast Guard Reserve when the Coast Guard is not operating as a service in the Navy;

(5) The Secretary of Commerce, with respect to retired members of the commissioned corps of the National Oceanic and Atmospheric Administration; and

(6) The Secretary of Health, Education, and Welfare, with respect to retired members of the commissioned Regular Corps of the Public Health Service and members of the commissioned Reserve Corps of the Public Health Service.