1.   These bullets can penetrate armor.

2.   Another bullet penetrated the bathroom window of another house in the same area.

3.   And there are deliberate, gang-related shootings where a bullet penetrates a leg rather than a vital organ.

4.   A bullet penetrated his buttocks and traveled to his abdomen, through his liver, kidney and lung, before settling near his heart.

5.   But Hinderberger said that for the purpose of analysis, Boeing assumed that the bullet penetrated whatever it was aimed at.

6.   Fairly frequently, sniper bullets penetrate the planes.

7.   He indicated his back, where, others said, a bullet had penetrated his spine.

8.   Hospital officials said the bullet penetrated the back of his head and remains lodged there.

9.   In addition, some bullets could penetrate the aluminum skin of a plane, but most airplanes are designed to prevent such a hole from developing into a tear.