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  2. Hypoxic air technology for fire prevention - Wikipedia

    en.wikipedia.org/wiki/Hypoxic_air_technology_for...

    Hypoxic air technology for fire prevention, also known as oxygen reduction system (ORS), is an active fire protection technique based on a permanent reduction of the oxygen concentration in the protected rooms. Unlike traditional fire suppression systems that usually extinguish fire after it is detected, hypoxic air is able to prevent fire.

  3. The Powder Mage trilogy - Wikipedia

    en.wikipedia.org/wiki/The_Powder_Mage_trilogy

    The Powder Mage trilogy is a series of epic fantasy novels written by American author Brian McClellan. It consists of the novels Promise of Blood (2013), The Crimson Campaign (2014) and The Autumn Republic (2015). [1] In 2014, Promise of Blood received the Morningstar Award for Best Fantasy Newcomer. [2]

  4. Petty officer third class - Wikipedia

    en.wikipedia.org/wiki/Petty_officer_third_class

    The U.S. Navy's high year tenure policy has made the good conduct variation for a petty officer third class all but obsolete. Among enlisted sailors 12 consecutive years of good conduct (categorized as no court-martial convictions or non-judicial punishments) entitles the sailor to wear a good conduct variation of their rank insignia, with the normally red chevrons under the specialty mark and ...