Certainly there's more to this, but a quick search of the Internets didn't reveal anything.
And I'll admit that I didn't know what a "Fort Worth deputy marshal" was. But I learned: "The primary responsibility of this position is to serve various arrests warrants and misdemeanor writs issued through the Municipal Court on an assigned shift; to perform computerized warrant searches; and to serve as court bailiff in an assigned courtroom." It pays $42,244 a year.