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NIJ's research also showed that ballistic-resistant material, including Zylon, can degrade as a result of exposure to environmental conditions, such as moisture and light.It is likely that the ballistic performance degradation in Zylon-containing armor is closely related to the chemical changes found in what is known as the oxazole ring.The conference brought together experts in the field to discuss findings and share views on suicide terrorism, what compels individuals to join terrorist organizations, and the utility of a central database of research on the topic. Griffiths, David Jurgens, Dan Jurafsky, and Jennifer L. of Homeland Security, Science and Technology Directorate, prepared by the Space and Naval Warfare Systems Center (April 2015).

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The latest report, NIJ's Third Status Report to the Attorney General on Body Armor Safety Initiative Testing and Activities, is available at https://gov.

NIJ performed ballistic testing on 103 Zylon-containing used armor vests from law enforcement agencies across the United States.

Breakage of the oxazole ring correlates with degradation of the mechanical properties of Zylon fibers.

The Department is issuing a Body Armor Standard Advisory Notice to alert law enforcement to the potential risks associated with the use of Zylon in body armor, and will adopt new interim requirements for its body armor compliance testing program.

Recognition and acceptance of the NIJ standard has grown worldwide, making it the performance benchmark for ballistic-resistant body armor.