The United States Marshals Service (USMS) is a federal law enforcement agency in the United States. The Marshals Service serves as the enforcement and security arm of the U.S. federal judiciary, although it is an agency of the U.S. Department of Justice and operates under the direction of the U.S. Attorney General. U.S. Marshals are the original U.S. federal law enforcement officers, created by the Judiciary Act of 1789 during the presidency of George Washington as the "Office of the United States Marshal" under the U.S. District Courts. The USMS was established in 1969 to provide guidance and assistance to U.S. Marshals throughout the federal judicial districts.

The Marshals Service is primarily responsible for locating and arresting federal suspects, the administration of fugitive operations, the management of criminal assets, the operation of the United States Federal Witness Protection Program and the Justice Prisoner and Alien Transportation System, the protection of federal courthouses and judicial personnel, and the protection of senior government officials through the Office of Protective Operations. Throughout its history the Marshals have also provided unique security and enforcement services including protecting African American students enrolling in the South during the civil rights movement, escort security for United States Air Force LGM-30 Minuteman missile convoys, law enforcement for the United States Antarctic Program, and protection of the Strategic National Stockpile.

The mission of the USMS is to enforce federal laws and provide support to virtually all elements of the federal justice system by providing for the security of federal court facilities and the safety of judges and other court personnel; apprehending criminals; exercising custody of federal prisoners and providing for their security and transportation to correctional facilities; executing federal court orders; seizing assets gained by illegal means and providing for the custody, management, and disposal of forfeited assets; assuring the safety of endangered government witnesses and their families; and collecting and disbursing funds

•  TOD | Tactical Operations Division: The TOD is responsible for arresting the most dangerous wanted felons. The TOD is only deployed when needed such as a barricaded suspect.

• Fugitive Recovery Division: The duties of the U.S. Marshals Service include protecting the federal judiciary, apprehending federal fugitives, managing and selling seized assets acquired by criminals through illegal activities, housing and transporting federal prisoners and operating the Witness Security Program.  

• Marshals Investigation Division:  The MID is the prime investigation force in the USMS they gather intel on the wanted suspects and even investigating law enforcement officers and department corruption.