The USMS is the enforcement arm of the federal courts, and as such, it is involved in virtually every federal law enforcement initiative. Presidentially appointed U.S. Marshals direct the activities of 94 districts — one for each federal judicial district. More than 3,843 Deputy Marshals and Criminal Investigators form the backbone of the agency. Among their many duties, they apprehend more than half of all federal fugitives, protect the federal judiciary, operate the Witness Security Program, transport federal prisoners, conduct body searches, enforce court orders and Attorney General orders involving civil disturbances and acts of terrorism, execute civil and criminal processes, and seize property acquired by criminals through illegal activities.