It was our job.
We were trained, conditioned, to react violently and then think about it.

There are different MOSs.
Everyone in the Army isn't a combat soldier.
Many serve in relatively safe areas. Protected by the combat soldier.
And there are a lot more of these rear echelon MOSs than combat MOSs.

Everyone isn't patrolling an alley, kicking in doors, and being shot at from the rooftops.

You really didn't think every US soldier in Iraq was fighting did you?

Less than 2% of the US Army is Infantry!
Therefor the slogan.
"FOLLOW ME"