Want a look inside the secret tunnels that terrorist group Hamas has used to infiltrate Israel? Take a tour with Sean Hannity. The Fox News host traveled 40 feet underground with an Israel Defense Forces guide to explore one of the sophisticated passages. Among facts viewers learn: At a cost likely exceeding $2 million apiece, the three dozen known tunnels boast tracks, electricity, smooth surfaces and other advanced engineering.

>>> Commentary by James Phillips:  What Are These Tunnels Hamas Digs to Attack Israel?