>> we're pretty tired, but we know that we're going to be making some crucial decisions and try to -- try to put an end to this violence. put an end to this war. and so -- when will it end for us? it doesn't. >> when there's no more inmates in prison. when we retire. >> captain flores and his team know full well they'll never completely removed gang from pnm. every day new inmates arrive and many of them like federico munoz waste no time before choosing sides. >> i think it was about a year after i got incarcerated in prison that i joined the snm. >> shortly after joining the prison gang, he was ordered by snm to kill a fellow gang member. >> i was 18. it was the first time i killed anybody. it wasn't easy to kill him in the sense that -- like you see it on the movies, how guys cavalierly kill people. wasn't like that for me.