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  2. List of U.S. security clearance terms - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._security...

    T3 or T3R - Tier 3 or Tier 3 Reinvestigation, now replace all NACLC. T5 and T5R - Tier 5 or Tier 5 Reinvestigation, now replace SSBI and SBPR respectively. Yankee White – An investigation required for personnel working with the President and Vice President of the United States. Obtaining such clearance requires, in part, an SSBI.

  3. Access badge - Wikipedia

    en.wikipedia.org/wiki/Access_badge

    An access badge is a credential used to gain entry to an area having automated access control entry points. Entry points may be doors, turnstiles, parking gates or other barriers. Access badges use various technologies to identify the holder of the badge to an access control system. The most common technologies are magnetic stripe, proximity ...

  4. Access code - Wikipedia

    en.wikipedia.org/wiki/Access_code

    Access code may refer to: Authentication. Password, a secret word; Personal identification number (PIN), a secret; Telecommunications. Trunk access code, used to dial a domestic call; International access code, used to dial an international call; Area code, a segment of a telephone number; Other. Access Code, a 1984 film with Macdonald Carey

  5. List of international call prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_international_call...

    This is a list of international dialing prefixes used in various countries for direct dialing of international telephone calls.These prefixes are typically required only when dialling from a landline, while in GSM-compliant mobile phone (cell phone) systems, only the symbol + before the country code may be used [citation needed] irrespective of where the telephone is used at that moment; the ...

  6. Mandatory access control - Wikipedia

    en.wikipedia.org/wiki/Mandatory_access_control

    History and background. Historically, MAC was strongly associated with multilevel security (MLS) as a means of protecting classified information of the United States.The Trusted Computer System Evaluation Criteria (TCSEC), the seminal work on the subject and often known as the Orange Book, provided the original definition of MAC as "a means of restricting access to objects based on the ...

  7. 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 ...

  8. Sensitive compartmented information - Wikipedia

    en.wikipedia.org/wiki/Sensitive_compartmented...

    Sensitive compartmented information. Sensitive compartmented information ( SCI) is a type of United States classified information concerning or derived from sensitive intelligence sources, methods, or analytical processes. All SCI must be handled within formal access control systems established by the Director of National Intelligence.

  9. Classified information in the United States - Wikipedia

    en.wikipedia.org/wiki/Classified_information_in...

    Code words are not levels of classification themselves, but a person working on a project may have the code word for that project added to their file, and then will be given access to the relevant documents. Code words may also label the sources of various documents; for example, code words are used to indicate that a document may break the ...