From a “***.army.mil” e-mail address: “Derb—Calling Down Fire On Your Own

Position is actually a recognized military tactic. It is, obviously, a

tactic only used in extremis, when the enemy is overrunning your position.

The utility of the tactic comes from the fact that, as the defender, you are

well dug in whereas the enemy is out in the open. Unless a round happens to

land right in your own foxhole, you stand a fair chance of survival. If one

does land in your own foxhole, well that’s why dogtags are made of metal…”