Victor isn't Knowledgeable in these subjects, and so won't be making any skill checks. He's waiting for someone to tell him what they are or for hostilities to begin before acting.I f they can be identified, he intends to ask what language they speak and try to reason with them. If no one can identify what they are, or can't identify what they speak if they can identify what they are, he'll just try communicating anyway, starting with Common. (assuming he won't have time to do more than one language, even if he keeps it brief, if other players only have enough time for one Knowledge check).