Sicarios from the Grupo de Reacción Bruno (GDRB), affiliated with the Mayo Zambada faction of the Sinaloa cartel, which operates mainly in Zacatecas. They are shown conducting bounding maneuver training exercises. While not particularly innovative, and their trigger discipline could use improvement, it's noteworthy to observe cartel members honing their skills. Facing off against trained sicarios who can coordinate effectively as a unit, underprepared forces like standard state police patrols may find themselves at a disadvantage. Add in cartel "droneros" handling drones for scouting or attacks, and the imbalance becomes even more pronounced.