other facilities. They have police powers. Obsolete uses Nazi Germany The Sicherheitspolizei, often abbreviated as SiPo, was a term used in Nazi Germany to describe the state political and criminal investigation security agencies. It was made up by the combined forces of the Gestapo (secret state police) and the Kripo (criminal police) between 1936 and 1939. As a formal agency, the SiPo was folded into the RSHA in 1939, but the term continued to be used informally until the end of the Third Reich. The Reichssicherheitsdienst (RSD) was the security police assigned to protect dignitaries. United States Security police is a term once used for the United States Air Force Security Forces, who function as the military police of the United States Air Force. See also Police Border guard Bouncer Traffic guard Police officer Security guard List of protective service agencies Provost United States Air Force Security Forces Citations General references "A NEW MEMBER OF THE LASD FAMILY" by John Herrera, Star News, September 2006 [http://www.mcfarlandpub.com/book-2.php?isbn=0-7864-1574-6 The Privatization of Police in America]: An Analysis and Case Study. McFarland & Company, 2003. External links History of the Los Angeles County MTA Police Crime prevention Law enforcement units Security