What does the NIJ standard establish for personal body armor?

The correct response indicates that the NIJ standard establishes minimum performance requirements for ballistic resistance in personal body armor. This standard is designed to ensure that body armor provides a certain level of protection against ballistic threats, such as bullets, based on rigorous testing and evaluation. The NIJ (National Institute of Justice) standards assess the armor's ability to withstand specific types of projectiles at various velocities, thus helping to ensure the safety and effectiveness of the armor worn by law enforcement and military personnel. This focus on minimum performance requirements is critical, as it ensures that all compliant body armor can be trusted to provide adequate protection for users in potentially life-threatening situations.