coverage group
(5) The term “coverage group” means (A) employees of the State other than those engaged in performing service in connection with a proprietary function; (B) employees of a political subdivision of a State other than those engaged in performing service in connection with a proprietary function; (C) employees of a State engaged in performing service in connection with a single proprietary function; or (D) employees of a political subdivision of a State engaged in performing service in connection with a single proprietary function. If under the preceding sentence an employee would be included in more than one coverage group by reason of the fact that he performs service in connection with two or more proprietary functions or in connection with both a proprietary function and a nonproprietary function, he shall be included in only one such coverage group. The determination of the coverage group in which such employee shall be included shall be made in such manner as may be specified in the agreement. Persons employed under section 709 of title 32 , who elected under section 6 of the National Guard Technicians Act of 1968 to remain covered by an employee retirement system of, or plan sponsored by, a State or the Commonwealth of Puerto Rico, shall, for the purposes of this chapter, be employees of the State or the Commonwealth of Puerto Rico and (notwithstanding the preceding provisions of this paragraph), shall be deemed to be a separate coverage group. For purposes of this section, individuals employed pursuant to an agreement, entered into pursuant to section 1624 of title 7 or section 499n of title 7 , between a State and the United States Department of Agriculture to perform services as inspectors of agricultural products may be deemed, at the option of the State, to be employees of the State and (notwithstanding the preceding provisions of this paragraph) shall be deemed to be a separate coverage group.