NOOSE

The National Office Of Security Enforcement, or NOOSE, is a law enforcement organization in Liberty City called upon when a wanted level of 3 stars or higher is reached. They'll appear in NOOSE Cruisers, NOOSE Patriots, Annihilators and Enforcers. They've replaced the Military and SWAT that was seen in previous GTA games. They are obviously based on the Department of Homeland Security, as well as NYPD ESU and various SWAT teams in the United States.

Trivia
The term NOOSE refers to a type of knot used in public hangings, a method of capital punishment employed around the world in earlier times.

SVENSKA (SWEDISH):

Det "Nationella kontoret för Säkerhetsoperationer", NOOSE, är en polisenhet i Liberty City som tillkallas när du nått en efterlysningsgrad på tre stjärnor eller fler. De kommer i NOOSE Cruisers (patrullbilar), NOOSE Patriots (Hummer-bilar), Annihilators (Attackhelikoptrar) och Enforcers (bepansrade bilar). De har i GTA IV bytts ut från militären och SWAT-styrkorna i tidigare spel. Myndigheten är baserad på det amerikanska Department of Homeland Security (Inrikessäkerhetsverket i Sverige).