Airport Police units are a security police agency assigned to perform law enforcement functions at airports. In some cases, they are branches of larger general purposes agencies. Other variations include dedicated agencies, combined police/fire agencies and even military units. In the United Kingdom it is the local territorial police force's responsibility to provide armed patrols to that airport, for example the Metropolitan Police Service's Aviation Security Operational Command Unit, with responsibility for London Heathrow Airport and London City. In the British Overseas Territory of Bermuda, policing of the Bermuda International Airport passed from the Bermuda Police Service to the Ministry of Transport's own Airport Security Police in 1995.
Airport police agencies are vital components of the international aviation security system but do not, in themselves, perform all aspects of airport security.
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