Boris glanced at the Marine and lowered his barrel slightly. He panned the room with his light and then returned the gun to point towards Cobble.
"You know the policy. As long as there's a uniform, there's a gun pointing at him" he said and kept his distance with the gun pointed at the Cobble's kneecaps.
"This may have been an inside job and even if he didn't personally slaughter the others, he may have opened the door for the enemy and is here as the bait for a trap" he said and looked around nervously.
He could see the american didn't find his view on the matter possible, so he grumbled something in russian before looking at Cole.
"Just keep your rifle ready just in case" he said, knowing that he would be just as dead as the others if he lost his squadmate.