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As a result, body armor models that contain Zylon will not be compliant, unless their manufacturers provide satisfactory evidence to NIJ that the models will maintain their ballistic performance over their declared warranty period.
Also, until the new requirements become effective, Zylon-containing armor vests will not be eligible for purchase with federal funds through the BVP program. 254 Posted July 7, 2006 When a Zylon-based body armor that had passed NIJ standards failed to fully protect an officer in 2003, NIJ began investigating why.
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.
Documents issued include: Body Armor: Announcement by Second Chance Body Armor calling on law enforcement agencies to immediately replace body armor manufactured with Zylon. IACP President Joseph Estey's Response to Announcement by Second Chance Body Armor. The newest NIJ Journal features an article about the findings of the investigation as well as interim changes to the standards and testing program.
Additional stories feature: Biometric-based identification used by a school in New Jersey to keep its students safer. Increased reports of rape involving people who know each other. Eberhardt, Body-Worn Video Cameras for Law Enforcement Assessment Report, U. Body Worn Cameras: Civil Rights Principles on Body Worn Cameras, signed by a coalition of privacy advocates (May 2015).
Of these vests, 60 (58 percent) were penetrated by at least one round during a six-shot test series.
Of those that passed penetration testing, 91 percent showed excessive "backface deformation," an indicator of the potential blunt trauma experienced by an officer wearing the armor.
Only four used armor vests tested met all performance criteria under NIJ's body armor standard for new body armor.
In the tests, age and appearance of used Zylon-based vests were ineffective predictors of potential ballistic performance.