Sam Fisher- Ringfoil Jaw

  Fisher fired again. The second airfoil ring was dead on, just like the first, but the guy in the web-vest clearly had a harder head, a numb skull. Whatever it was, he jerked aside and flailed, clutching at his face and moaning. His buddy on the ground found this hilarious and laughed like a hyena – or at least, he did until he realized the gunner now had a broken jaw and blood streaming from his nostrils. Finally, gravity caught up with the guy in the vest and he tumbled backward over the side of the flatbed, vanishing from sight.

- Dragonfire, Chapter 4