Scar Tissue

The moment the little boy's eyes met his, he knew that the world was a sick place.
The child disappeared beneath the crushing weight of the MRAP's wheels, and though the vehicle had no problem rolling over this tiny obstacle, his mind registered a small bump.
Standing orders were to never stop the vehicle for anything, and he had obeyed those orders.
What kind of person did following those orders make him?
"Sir?" the clerk asked.
"Hmm?"
"Paper, or plastic?"
The young boy that had triggered his horrid memory, had left with his mother a while ago, groceries in tow.