us, and then showed me how to plant them. he's serving 20 years. the maximum sentence. in the crowded cell, some men say they never supported isis. others accept their fate. the kurds are doing their best to separate the true believers from the rest. in this rehabilitation center, there are scores of teenage boys. this 15-year-old was an isis fighter. his first mission to plant explosives at a u.s. base. he describes how they were given the bombs, weapons and suicide vests. we covered everything with the women's black nikop so the jets in the sky would not target us.