killer bullets on the  firing range he shoots at a bullet proof vest several yards away. As  the vest is being bought back to Riggs you can see the bullet hole  where the bullet went through the front and back of the vest. This  means it penetrated two layers of armor. At the construction site  Lorna wears two vests. Travis shoots her from only a few feet away  yet the bullet only penetrates one layer of armor, not two.