Case based his story on incidents he gathered from more than 20 years on the job -- particularly an early-90s skirmish between gangs in Chicagos Cabrini-Green neighborhood. We were the best of the best, and we handled Cabrini-Green like no one else could, he says. Case was born in Indiana but moved to Chicago to become a patrolman. By 1990, he relocated to Saint Paul, Minnesota. But he says he was craving Chicago and returned to the citys force a decade ago. I have a team of my very own fire-breathing, combat-tested, door-kicking warriors to leap in the path of trouble, he says. Case turned to writing last year -- primarily as a way to document Chicagos brutal and frequent crime sprees. Out of Cabrini, he says, pays tribute to the flatfoots who work the mean streets. I have the honor to say that Ive locked up an asshole in every district in the city, he says.