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  2. Technical support - Wikipedia

    en.wikipedia.org/wiki/Technical_support

    Technical support, also known as tech support, is a call centre type customer service provided by companies to advise and assist registered users with issues concerning their technical products. [1] Traditionally done on the phone, technical support can now be conducted online or through chat. At present, most large and mid-size companies have ...

  3. United States Air Force Combat Control Team - Wikipedia

    en.wikipedia.org/wiki/United_States_Air_Force...

    The United States Air Force Combat Control Teams, singular Combat Controller (CCT) (AFSC 1Z2X1), are an elite special operations force (specifically known as "special tactics operators") who specialize in all aspects of air-ground communication, as well as air traffic control, fire support (including rotary and fixed-wing close air support), and command, control, and communications in covert ...

  4. 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.

  5. Joint terminal attack controller - Wikipedia

    en.wikipedia.org/wiki/Joint_terminal_attack...

    A United States Air Force joint terminal attack controller using a radio to coordinate close air support with an A-10 Thunderbolt II. Joint Terminal Attack Controller (JTAC) is the term used in the United States Armed Forces and some other military forces for a qualified service member who directs the action of military aircraft engaged in close air support and other offensive air operations ...

  6. Tier 2 network - Wikipedia

    en.wikipedia.org/wiki/Tier_2_network

    A Tier 2 network is an Internet service provider which engages in the practice of peering with other networks, but which also purchases IP transit to reach some portion of the Internet. [1] Tier 2 providers are the most common Internet service providers, as it is much easier to purchase transit from a Tier 1 network than to peer with them and ...

  7. Air Force Specialty Code - Wikipedia

    en.wikipedia.org/wiki/Air_Force_Specialty_Code

    Air Force Specialty Code. The Air Force Specialty Code ( AFSC) is an alphanumeric code used by the United States Air Force to identify a specific job. Officer AFSCs consist of four characters and enlisted AFSCs consist of five characters. A letter prefix or suffix may be used with an AFSC when more specific identification of position ...

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