Complex sentence: Jack is assigned out of the office of the U.S. Marshals Service, and as current the Sheriff of Eureka, would be a GS 1811, grade 12, with a 25% Law Enforcement bonus.
Split into simpler sentences: Jack is assigned out of the office of the U.S. Marshals Service, and is currently the Sheriff of Eureka. Accordingly, Jack would be a GS 1811, grade 12, with a 25% Law Enforcement bonus.