humvees rescue him and hunt on. an isis fighter pops up from a tunnel. shoots. he blows him up. a tenacity and desire to die that will surely slow and bloody the fight ahead. >> nick joining us now live from near mosul right now. what do they anticipate, nick, weeks, months? this is going to be brutal. remember, there are more than 1 million people there now. >> reporter: this sewn the beginning and the advance through what should be the eddest area. kicked out by isis probably years ago. really just the fighters digging down, willing to blow themselves up, laying mines in the way of the iraqi and peshmerga forces as they advance making them very