Four wands and two guns were immediately on Ron.  Mrs. Weasley shouted in surprise and came rushing over, pulling her wand on them as well.  This caused a chain reaction amongst the Order members in the room, until only Hermione and Harry were left.  (Though many of the very confused bystanders also kept their wands to themselves.)  Harry was shockingly unresponsive, standing closer to her side and sweeping his eyes over everyone else as he kept a white knuckle grip on his wand at his side.