20 CFR § 10.735 - When is a non-Federal law enforcement officer (LEO) covered under the FECA?
(a) A law enforcement officer (officer) includes an employee of a State or local Government, the Governments of U.S. possessions and territories, or an employee of the United States pensioned or pensionable under sections 521-535 of Title 4, D.C. Code, whose functions include the activities listed in 5 U.S.C. 8191.
(b) Benefits are available to officers who are not “employees” under 5 U.S.C. 8101, and who are determined in the discretion of OWCP to have been engaged in the activities listed in 5 U.S.C. 8191 with respect to the enforcement of crimes against the United States. Individuals who only perform administrative functions in support of officers are not considered officers.