Why 3-D Printed Body Armor Is Useful for Both the U.S. Military and Terrorists Why 3-D Printed Body Armor Is Useful for Both the U.S. Military and Terrorists Kris Osborn · July 16, 2019 Please leave this field emptyStay Updated with Warrior Maven Subscribe for daily military news and updates delivered straight to your inbox. We don’t spam! Read our privacy policy for more info. Check your inbox or spam folder to confirm your subscription.