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.
This fact sheet describes the Bulletproof Vest Partnership (BVP) Program, a U. Department of Justice initiative designed to provide critical resources to state, local, and tribal jurisdictions for the sole purpose of purchasing bullet-resistant body armor for sworn law enforcement officers.
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.
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.
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.
Another article summarizes findings from an NIJ-sponsored conference about suicide terrorism.