My money's on Rush.
Mine too.
Be fun to listen to though, maybe he could do this on his radio show.
Just to test them out, since they are from a large Jewish community, I would ask them if they knew what a Kapo is? Then I would go into simple dates - DDay, bombing of Pearl Harbor, etc. Then I would ask them about the Soviet-Nazi pact and what the impact was. Then I would ask them about military leaders, than world leaders.