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Answer:
NIJ is conducting extensive research to determine the causes and mechanisms of body armor degradation. NIJ hopes to develop an artificial aging protocol that will enable body armor manufacturers to accurately predict the service life of a given armor model. It is also anticipated that this research will eventually lead to the development of a nondestructive test method to determine the efficacy of a given unit of armor. Currently, the only method available to accomplish this is destructive ballistic testing.

• Is used armor's ability to prevent excessive backface signature as important as its ability to prevent bullet penetration?
• What is the Department of Justice doing to modify the existing body armor standard and compliance testing program to ensure the performance of used body armor?