It is one of the largest central paramilitary forces in India. Strength is nearly 105,000 and rivals other countries when it comes to a government agency providing security to such a large number of industries. Many of the international airports in India were the responsibility of the city or district police. CSIA for example, was originally serviced by members of Mumbai Police (then known as Bombay Police), but contract for security has been handed over to the CISF. The Railway Protection Force (RPF) is known for protecting the railways of India and ensuring safety of citizens in trains. The Defence Security Force protects Ministry of Defence property. Japan In Japan, security police, also known as "SP" are law enforcement officers that provide security for domestic and foreign dignitaries. Their role to dignitary protection is similar to that of the United States Secret Service. Malaysia The Royal Malaysia Police are generally responsible for protecting and policing the airports, seaports and government sites in Malaysia. Unlike several other countries, there is no state police for individual states. Portugal The Navy Establishments Police () is a small security police force responsible for protecting several of the facilities of the Portuguese Navy, including the navy central administration buildings, the Lisbon Naval Base and the Navy Museum. The Navy Establishments Police is a non-military service, in contrast with the Naval Police (Polícia Naval) which is the Portuguese Navy's military police. South Africa During the 1960s the South African Security Police were known for detaining and interrogating members of the public, often leading to the victims death or disappearance, especially in the height of the Apartheid era. Sri Lanka During the 1990s the Sri Lanka Police created a sub unit with its members known as police security assistants. They were mostly limited to protection of police and governmental facilities. Sweden An ordningsvakt is a person deputized by the Swedish Police Authority to act as a law enforcement officer with limited police powers. His main mission is to assist in maintaining public order. An ordningsvakt may carry a baton, firearm, and handcuffs, may use a police dog, and is authorized to use force if necessary to maintain order. An ordningsvakt may reject, remove and, if necessary, detain, a person who disturbs the public order in his area of responsibility. He may also detain persons suffering from alcohol intoxication, seize alcoholic beverages, make a citizen's arrest (as everyone