This mission will introduce you to Gang Wars. First go to Ammunation and strap up with armor and everything for war. Then head over to Glen Park and start a gang war by killing 3 or more Ballas, the ones in groups. A turf war is now started, then 3 waves of Ballas will come and you must kill them all. After that, the snitch (Doberman) will appear and you just have to kill him.