Gangland (S01E03)

Gangs pose the biggest challenge to keeping peace at PNM. These groups are well-organized, fiercely loyal, and frequently resort to violence. Francisco intervenes in a brawl, while Tyler pushes boundaries with a gang leader. Meanwhile, Keith works alongside PNM's top gang unit, and the new CO, Cohen Mangin, is determined to show that he can live up to his family's legacy in law enforcement.