Behind Rio’s deadly raid: Brazil’s billion-dollar criminal networks

By Alessandra Freitas, CNN (CNN) — Armored vehicles rumbling through narrow alleys. Rifle shots cracking in heavy crossfire. Helicopters and weaponized drones firing from above. Soldiers in military gear engaged in violent combat. Bodies scattered on blood-slicked streets. These could be scenes from a war zone.  But on October 28, they unfolded not on a desolate battlefield but on the outskirts of Rio