(US, informal, often preceded by the) Police officers.
Fifty of New York's finest were on hand for security.
(US, informal) Members of the military.
1977-1980, Lou Sullivan, personal diary, quoted in 2019, Ellis Martin, Zach Ozma (editors), We Both Laughed In Pleasure
Told him I'd had a fun time with a sailor & he said, "Oh no! Are you corrupting our country's finest?"