producer julie snyder and others located the high school, and we sent three reporters into harper high school. and it was a school in chicago, not well-known or famous, not even the worst school in the city by far. it was just a school that gave us access where they had 29 shootings in one school year. i can't remember if eight or nine kids died in one school. we felt like this is a neighbourhood where people know what it's like to live through violence that the rest of us don't know, we can document the trauma, and document the staff, who was enormously competent at trying to quell the violence, and when one kid would get shot, they had procedures he had learnt from the army, after action reports, where they'd jump into action to name who the other kids were who might be affiliated and may be shot. so you could watch, you know, this school deal with this thing. something like that, where we would go in for so long with mann power, for any journalistic work. >> we did two hours because we saw so much stuff that was surprising. gang structure changed in chicago. gangs were nothing like