The Mike Wallace Question

Many years ago, Mike Wallace appeared on a panel discussion program along with Peter Jennings and the moderator asked the question: If you were accompanying a unit of enemy soldiers in the field and an American unit was about to walk into an ambush they had set, would you try to warn the Americans?  Peter Jennings’ initial reaction was that he would try to do so.  At that point, Mike Wallace jumped all over Jennings’ case; going into a tirade about professional ethics.  I find it extremely ironic that a Canadian citizen showed more concern for American servicemen’s lives than did a former U.S. Navy Officer.  To me, this raises an interesting question: If American troops ever find an American journalist embedded with a unit of foreign fighters, what should they do with that journalist?