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  2. Police code - Wikipedia

    en.wikipedia.org/wiki/Police_code

    Police code. A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include "10 codes" (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes, or ...

  3. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens. Alternatively, sirens may be used if necessary ...

  4. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    Ten-code. Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [1]

  5. Swatting - Wikipedia

    en.wikipedia.org/wiki/Swatting

    Swatting. Swatting is a criminal harassment act of deceiving an emergency service (via such means as hoaxing an emergency services dispatcher) into sending a police or emergency service response team to another person's address. This is triggered by false reporting of a serious law enforcement emergency, such as a bomb threat, murder, hostage ...

  6. New York City Police Department Emergency Service Unit

    en.wikipedia.org/wiki/New_York_City_Police...

    The Emergency Service Unit (ESU) is part of the Special Operations Bureau of the New York City Police Department. The unit provides specialized support and advanced equipment to other NYPD units. Members of ESU are cross-trained in multiple disciplines for police, medical, and rescue work. ESU is always on patrol (all three tours, 365 days a ...

  7. Computer-aided dispatch - Wikipedia

    en.wikipedia.org/wiki/Computer-aided_dispatch

    Computer-aided dispatch ( CAD ), also called computer-assisted dispatch, is a method of dispatching taxicabs, couriers, field service technicians, mass transit vehicles or emergency services assisted by computer. It can either be used to send messages to the dispatchee via a mobile data terminal (MDT) and/or used to store and retrieve data (i.e ...

  8. Exigent circumstance - Wikipedia

    en.wikipedia.org/wiki/Exigent_circumstance

    Emergency aid doctrine is an exception to the Fourth Amendment, allowing warrantless entry to premises if exigent circumstances make it necessary. A number of exceptions are classified under the general heading of criminal enforcement: where evidence of a suspected crime is in danger of being lost; where the police officers are in hot pursuit; where there is a probability that a suspect will ...

  9. Miranda warning - Wikipedia

    en.wikipedia.org/wiki/Miranda_warning

    Law enforcementin the United States. In the United States, the Miranda warning is a type of notification customarily given by police to criminal suspects in police custody (or in a custodial interrogation) advising them of their right to silence and, in effect, protection from self-incrimination; that is, their right to refuse to answer ...