They were distracted by a crisp mechanical clunking noise from the other side of the room. Sokolov looked over to see that Igor had pulled the rifle out of the case. It was some sort of AR-15 variant. The sound had been made by him drawing the bolt carrier back, locking the action into an open state. As Sokolov watched, Igor plucked out one of several loose cartridges that had been rattling around loose inside the case, manually fed it into the breech, and slapped the side of the weapon, releasing the bolt and letting it slam the cartridge into firing position.