These are the people from "Logan's Run
" who enforce the rule that people have to die at 30. Any who run rather than face the chance of renewal
are chased and "Put to Sleep
In the movie they wear black costumes with a sliver/white horizontal band around their chest. They use a sleep gun which has flames come out slots in the barrel like a firing artillary piece.
In the original book they use a modified revolver that holds different shells in the chambers to give nets, rippers etc. (a lot like a Megacity Judge's Lawgiver)