It was chaos, shooting and yelling, Ben didn't know who was who, which side was which, it was mania. 
Over the course of the year or so since his accident Ben had learned how to shoot a gun, but he still [i]hated[/i] shooting, he didn't want to hurt [i]anyone[/i] good or bad. 
So, when a Russian boy who looked like he could be 13 had approached them on the road and then had his group ambush them and start shooting at them, Ben panicked and decided the only thing he could do was hide, he knew how to shoot a gun, actually using it was a whole other issue.
He heard screaming, shooting for shotguns and more yelling, something that sounded like a muffled shot and then Luke letting out a startled gasp, oh god, ohgodohgodohgod, he had to get out there he had to- He ran a short ways before hiding behind a tree near the fighting group, just out of the way, but not so far that they wouldn't find him if they looked- he had to move- 
No, he couldn't, he had best stay here, if anyone approached him he would shoot them, but, if he could avoid shooting he was going to.
Oh god he was so weak, he should be out there fighting, not cowering.

The cold mid-morning air stung at his nose and at his eyes which were now forming frightful tears in the them, this wasn't happening, this couldn't be happening, not again, he couldn't lose them again-. 
He was about to stand up when suddenly he turned his head to find- "you!" He said in a whisper-yell, his face more startled than enraged, it was the Russian boy, he had 'joined him' behind the tree that he was cowering behind. 
He raised his gun and pointed it at the other, not intending to shoot, but trying to intimidate the other.