Israel's "Iron Dome" missile defense system proved itself best of breed in the recent November conflict between Israel and Hamas. But where does that leave Raytheon (RTN), owner of the now second-best Patriot missile defense system? What does it mean going forward for companies like Lockheed Martin (LMT -0.11%), Boeing (BA 1.76%), and Northrop Grumman (NOC 1.04%), all of which are working on laser-based missile defense systems? Listen in, as Fool contributor Rich Smith explains.