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  2. Area 51 - Wikipedia

    en.wikipedia.org/wiki/Area_51

    The CIA asked the AEC to acquire the land, designated "Area 51" on the map, and to add it to the Nevada Test Site. [ 9 ] : 56–57 Johnson named the area "Paradise Ranch" to encourage workers to move to "the new facility in the middle of nowhere", as the CIA later described it, and the name became shortened to "the Ranch".

  3. Airspace class (United States) - Wikipedia

    en.wikipedia.org/wiki/Airspace_class_(United_States)

    There are no entry or clearance requirements for class G airspace, even for IFR operations. Class G airspace is typically the airspace very near the ground (1,200 feet or less), beneath class E airspace and between class B-D cylinders around towered airstrips. Radio communication is not required in class G airspace, even for IFR operations.

  4. Q clearance - Wikipedia

    en.wikipedia.org/wiki/Q_clearance

    Q clearance or Q access authorization is the U.S. Department of Energy (DOE) security clearance required to access Top Secret Restricted Data, Formerly Restricted Data, and National Security Information, as well as Secret Restricted Data. Restricted Data (RD) is defined in the Atomic Energy Act of 1954 and covers nuclear weapons and related ...

  5. Emergency exit - Wikipedia

    en.wikipedia.org/wiki/Emergency_exit

    An emergency exit in a building or other structure is a special exit used during emergencies such as fires. The combined use of regular and emergency exits allows for faster evacuation, and emergency exits provide alternative means of evacuation if regular exits are inaccessible. Emergency exits must: Be clearly marked (usually with signage ...

  6. Global Entry - Wikipedia

    en.wikipedia.org/wiki/Global_Entry

    Kiosks are currently available at the Cancun, Los Cabos, and Mexico City international airports, but the Mexican government hopes to expand it to other cities in the near future. [40] South Korea: Smart Entry Service is the automated immigration clearance system. South Korean citizens aged 7 or above, all foreigners residing in South Korea aged ...

  7. United States government safe and vault door specifications

    en.wikipedia.org/wiki/United_States_government...

    A United States Government Class 5-B vault door, which has been tested and approved by the Government under Fed. Spec. AA-D-600D, is ballistic resistant and affords the following security protection: 20 man-hours against surreptitious entry. 30 man-minutes against covert entry.

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